Question: In percentages, how much of an increase in people playing rugby union or one of its variants from 2007 to 2011?
About the article "Rugby union", section "Statistics and records".

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According to a 2011 report by the Centre for the International Business of Sport at Coventry University, there are now over four and a half million people playing rugby union or one of its variants organised by the IRB.
This is an increase of 19 percent since the previous report in 2007.
The report also claimed that since 2007 participation has grown by 33 percent in Africa, 22 percent in South America and 18 percent in Asia and North America.
In 2014 the IRB published a breakdown of the total number of players worldwide by national unions.
It recorded a total of 6.6 million players globally, of those, 2.36 million were registered members playing for a club affiliated to their country's union.
Rugby union's premier event, the Rugby World Cup, has continued to grow since its inception in 1987.
The first tournament, in which 16 teams competed for the title, was broadcast to 17 countries with an accumulated total of 230 million television viewers.
Ticket sales during the pool stages and finals of the same tournament was less than a million.
The 2007 World Cup was contested by 94 countries with ticket sales of 3,850,000 over the pool and final stage.
The accumulated television audience for the event, then broadcast to 200 countries, was 4.2 billion.
The most capped international player from the tier 1 nations is Irish and British Lions centre Brian O'Driscoll who has played in 141 internationals.
While the top scoring tier 1 international player is New Zealand's Dan Carter, who has amassed 1442 points during his career.
In April 2010 Lithuania broke the record of consecutive international wins previously held by New Zealand and South Africa, which was 17 consecutive wins against tier 1 nations, with their 18th win in tier 2 in a match against Serbia.
The highest scoring international match between two recognised unions was Hong Kong's 164–13 victory over Singapore on 27 October 1994 While the largest winning margin of 152 points is held by two countries, Japan (a 155–3 win over Chinese Taipei) and Argentina (152–0 over Paraguay) both in 2002.
Officially disbanded in 2011; to be replaced with separate national unions in each of its former member countries.
The new United Arab Emirates union was founded shortly before the AGRFU dissolution.
1974 Luxembourg Rugby Federation 1975 USA Rugby (founded as United States of America Rugby Football Union) 1977 Brunei Rugby Football Union 1982 Norwegian Rugby Union 1986 Andorran Rugby Federation 1989 Tahiti Rugby Union 1989 Cook Islands Rugby Union 1990 Namibia Rugby Union 1990 Hungarian Rugby Union 1992 Austrian Rugby Federation 1992 South African Rugby Union (founded as South Africa Rugby Football Union, a merger of the white South African Rugby Board and the non-racial South African Rugby Union; adopted current name in 2005) 1996 Monegasque Rugby Federation 1997 Peruvian Rugby Federation 1998 Philippine Rugby Football Union 2000 Pakistan Rugby Union 2004 Azerbaijani Rugby Federation 2008 Ecuadorian Rugby Federation 2007 Jordan Rugby Union.
2009 Turkey Rugby Federation 2010 United Arab Emirates Rugby Association (not yet a full IRB member)  
Rugby league is one of a number of sports vying for (distant) second place to Association football in the nation's affection.
The MORI Sports Tracker consistently reports that rugby league interests around 15% of British adults.
It was the fourth most popular team sport in the February 2005 list behind football, cricket and rugby union; 12% of British adults watched it regularly.
Rugby league is extremely popular in its "heartland" and, in those areas, interest in the sport rivals that of soccer.
Many large towns with rugby league traditions do not have football teams as a result of the monopoly on local interest: for example, St Helens, Whitehaven, Warrington, Keighley, Castleford, Dewsbury, Batley and, until recently, Wakefield.
It is striking how interest in rugby league can be very widespread in such towns whilst towns just a few miles away might have hardly any fans of the sport.
The regions in which rugby league is played most are West Cumbria, where the amateur version has a high participation rate; south Lancashire outside the cities of Liverpool and Manchester; West Yorkshire and the city of Hull.
The sport is present in South Yorkshire and in York, but on a much smaller scale; it has little presence in the North East or the largely rural county of North Yorkshire.
Many of the professional and semi-professional teams are connected by the M62 motorway and so the term "M62 corridor" is sometimes used, often in a derogatory manner, to refer to the area where rugby league is most popular.
A 1994 survey revealed that sixty percent of people regularly attending rugby league lived in only four postal districts along the M62.
Rugby league is considered by most English people to be a regional sport, which perhaps prevents rugby league making further inroads into the English psyche in the South, and those cities which already thrive on soccer, and to a lesser extent, cricket and rugby union.
Neither is it played in as great numbers elsewhere in England, although semi-professional and amateur clubs do exist in the lower national leagues and conference leagues and there is significant schools participation in London.
Fifty per cent of viewers who watch rugby league on Sky Sports live in the South of England.
Over 40% of active rugby league supporters are female.
At the beginning of the 2006 season there were between thirty and forty female-only rugby league clubs running in England, not including clubs that have teams of both sexes.
The majority of these clubs are located in Lancashire and Yorkshire.
Perhaps because of its regional character, rugby league as a whole has a lower participation rate compared to the other three major sports in England.
Rugby league has for much of its history been banned in the armed forces and in many schools and universities, further stifling growth.
These barriers have largely been dismantled in the past ten years due to professionalisation of the rival code of rugby union.
In 2004 the Rugby Football League reported 62,463 registered players (this is a UK-wide figure).
However in 2008, the RFL noted that there were only 2,000 registered club players aged 30 or over.
In contrast, with centralisation and streamlining efforts in regard to the governance of the sport throughout the UK since 2004, the inclusion of Rugby League players from the British Amateur Rugby League Association, the Rugby League Conference, plus the Student Rugby League and the Military Rugby League, the Rugby Football League as at 2011, now reports a player registration rate nearing 300,000.
This figure rivals the participation rate for the code in Australia.
The 2006 Super League generated the highest weekly average attendance in the 11-year history of the competition.
The average weekly attendance for the regular season stood at 9,026, generated by an aggregate attendance of 1,516,342 supporters.
This is an increase on the 2005 season average of 8,887.
The attendances are not evenly spread between clubs within Super League; whilst the best supported team, Leeds with average gates of 15,683, a couple of clubs failed to attract averages of above 5,000.
Crowds at matches below the top flight can exceed 3,500, however most of the clubs in this division have attendances lower than this.
Although attendances outside Super League can be quite low, many of the teams play in small towns and the attendance figures represent a large percentage of the local population. 
The Greece National Rugby Union team represents one of the world's newest rugby union playing nations.
The national team is governed by the HRF (Hellenic Rugby Federation), or EOP (Elliniki Omospondia Rugby), presided by Evangelos Stamos.
Greece has been participating in international competitions since October 2005 playing its first international game against Austria in Vienna.
Since then, they have played several international games in FIRA competition 3D, and in Greece.
Greece played Slovakia in the Final on 12 May 2007 in Thessaloniki, were they won 20–17 and in doing so gained promotion to division 3C.
The current coach of the Greek national team is Mike Bishop taking over from Niall Doherty who is currently involved with Turkey. 
Touch rugby, Refers to games derived from rugby football in which players do not tackle in the traditional, highly physical way, but instead touch their opponents using their hands on any part of the body, clothing, or the ball.
A formal, competitive variety, known as Touch, developed from rugby league and now exists as a sport in its own right.
In addition, touch rugby games are played as training activities for rugby league and rugby union; as safer variants of rugby, particularly in schools and junior clubs, and as an informal social sport.