Question: What year did British based gambling company take over running the Killiney Novice Chase?
Context: Douvan (foaled 9 May 2010) is a French-bred, Irish-trained Thoroughbred racehorse who competes in National Hunt racing.  He was originally trained in France before moving to Ireland in the summer of 2014.  After finishing second on his debut he won his remaining five races over hurdles including the Moscow Flyer Novice Hurdle, Supreme Novices' Hurdle and Herald Champion Novice Hurdle.  In the following year he was switched to steeplechasing and won all his six races over fences as a novice including the Racing Post Novice Chase, Arkle Novice Chase, Arkle Challenge Trophy, Maghull Novices' Chase and Ryanair Novice Chase.  In the 2016-17 season he continued his unbeaten run in steeplechases by winning his first three starts, including the Grade One Paddy Power Cashcard Chase, before suffering his first defeat over fences when favourite for the Queen Mother Champion Chase. The Lombardstown Mares Novice Chase is a Grade 3 National Hunt novice chase in Ireland which is open to mares aged four years or older.  It is run at Cork over a distance of 2 miles and 1 furlong (3,419 metres).  The race is scheduled to take place each year in December.  Since 2014 the race has been sponsored by the Kerry Group and run as the Kerry Group European Breeders Fund Mares Novice Chase. The Anaglog's Daughter Mares Novice Chase, currently run as the Champs Elysees Coolmore National Hunt Sires Mares Novice Chase for sponsorship reasons, is a Grade 2 National Hunt novice Steeplechase in Ireland which is open to mares aged five years or older.  It is run at Thurles over a distance of 2 miles and 4 furlongs (4,023 metres) and during the race there are fourteen fences to be jumped.  The race is scheduled to take place each year in January. The Dr P. J. Moriarty Novice Chase, currently known for sponsorship purposes as the Flogas Novice Chase, is a Grade 1 National Hunt steeplechase in Ireland which is open to horses aged five years or older.  It is run at Leopardstown over a distance of about 2 miles and 5 furlongs (4,225 metres), and during its running there are fourteen fences to be jumped.  The race is for novice chasers, and it is scheduled to take place each year in February. Un de Sceaux (foaled 5 May 2008; ] ) is a French-bred AQPS racehorse who competes in National Hunt racing.  After winning both his races in France he was transferred to Ireland where he won two novice hurdles.  In the 2013/14 National Hunt season he was undefeated in five races including the Red Mills Trial Hurdle in Ireland and both the Prix Hypothese and the Prix Leon Rambaud in France.  When switched to steeplechases he recovered from a fall on his debut to win the Arkle Novice Chase, Arkle Challenge Trophy and Ryanair Novice Chase in the 2014-15 season.  In 2015-16 he won the Clarence House Chase but was beaten by Sprinter Sacre when favourite for the Queen Mother Champion Chase in what his defeat when completing a steeplechase.  He began the 2016-17 with a win in the Tingle Creek Chase and followed up with his second victory in the Clarence House Chase before taking the Ryanair Chase in March. Sir Des Champs (foaled 28 May 2006) is a French-bred, Irish-trained AQPS racehorse who competes in National Hunt races.  After winning only one of his five races in his native country, Sir Des Champs was transferred to Ireland and won seven races in succession including the Martin Pipe Conditional Jockeys' Handicap Hurdle, Greenmount Park Novice Chase, Killiney Novice Chase, Jewson Novices' Chase and Growise Champion Novice Chase.  The 2012/2013 saw the emergence of a rivalry between Sir Des Champs and another Irish-trained chaser Flemenstar.  After beating his rival in the Hennessy Gold Cup, Sir Des Champs was regarded as a leading contender for the 2013 Cheltenham Gold Cup in which he finished second to Bobs Worth. The Scilly Isles Novices' Chase is a Grade 1 National Hunt chase in Great Britain which is open to horses aged five years or older.  It is run at Sandown Park over a distance of about 2 miles and 4½ furlongs (4,124 metres), and during its running there are seventeen fences to be jumped.  The race is for novice chasers, and it is scheduled to take place each year in late January or early February.  It was sponsored by The Tote in 2011 and run as the Totepool Challengers Novices' Chase, and by Betfair in 2012 and run as the Betfair Novices' Chase.  The 2013 running was sponsored by Betfred and run as the Betfred Mobile Lotto Challengers' Novice Chase.  The race is still sponsored by Betfred and the Scilly Isles name was restored to the race title from 2014. The Killiney Novice Chase is a Grade 3 National Hunt chase in Ireland.  It is run at Leopardstown Racecourse in January, over a distance of 2 miles and 3 furlongs.  Prior to 2010 the race was titled the Paddy Fitzpatrick Memorial Novice Chase.  In 2010 it was called the MCR Chase, in 2011 it was called Tote Pick Six Killiney Novice Chase and in 2012 and 2013 the race was sponsored by Boylesports and run as the Boylesports.com Bet On Your Mobile Novice Chase.  Boylesports continued to sponsor the race in 2013 when the title reverted to the Killiney Novice Chase.  Since 2016 it has been sponsored by the Ladbrokes Coral bookmaking group.  it was downgraded from Grade 2 to Grade 3 in 2017. Ladbrokes Coral Group plc is a British based betting and gambling company.  It is based in London.  From 14 May 1999 to 23 February 2006, when it owned the Hilton hotel brand outside the United States, it was known as "Hilton Group plc".  It is listed on the London Stock Exchange and is a member of the FTSE 250 Index, having been relegated from the FTSE 100 Index in June 2006. Newmill (foaled 17 April 1998) is a retired, Irish Thoroughbred racehorse who competed in National Hunt racing.  He reached his peak as an eight-year-old in the spring of 2006 when he won two of the season's most important two mile steeplechases: the Queen Mother Champion Chase in England and the Kerrygold Champion Chase in Ireland.  In his early career he showed promise as a novice hurdler winning the Royal Bond Novice Hurdle, Barry & Sandra Kelly Novice Hurdle and Johnstown Novice Hurdle.  When switched to chasing he won the Paddy Fitpatrick Memorial Novice Chase and Kinloch Brae Chase before recording his most important victories.  His later career was less successful although he did win the Red Mills Trial Hurdle in the autumn of 2006 and the Kinloch Brae Chase for a second time as a twelve-year-old in 2010.
Answer: Since 2016