Title: History of rugby union in Scotland
Content:  The Calcutta Cup was gifted to the Rugby Football Union in 1878 by the members of the short-lived Calcutta Rugby Club. The members had decided to disband: the cup was crafted from melted-down silver rupees which became available when the Club's funds were withdrawn from the bank. The Cup is unique in that it is competed for annually only by England and Scotland. The first Calcutta Cup match was played in 1879 and, since that time, over 100 matches have taken place. Scotland have won the Calcutta Cup 39 times. They compete in Six Nations Championship and have never won it, however they did win the last 5 nations championship in 1999 only narrowly missing out on a grand slam. Scotland have participated in every Rugby World Cup tournament.
Title: Calcutta Cup
Content:  The Calcutta Cup is the trophy awarded to the winner of the rugby match between England and Scotland. It is the oldest of several trophies awarded under the umbrella of the Six Nations Championship, which include the Millennium Trophy, Centenary Quaich, Giuseppe Garibaldi Trophy, Auld Alliance Trophy, the Doddie Weir Cup (the last two were first contested in 2018). The Calcutta Cup was first competed for in 1879, Scotland has won it 41 times and England 71, with 16 ties. The current holder is Scotland. The cup is of Indian workmanship, decorated with cobras and an elephant.
Title: Scotland national rugby union team
Content:  the competition accepted a sixth competitor, Italy, thus forming the Six Nations. Since this change, Scotland have yet to win the competition. The Rugby World Cup was introduced in 1987 and Scotland have competed in all nine competitions, the most recent being in 2019, where they failed to reach the quarter-finals. Their best finish came in 1991, where they lost to the All Blacks in the third place play-off. Scotland have a strong rivalry with the English national team. They both compete annually for the Calcutta Cup. Each year, this fixture is played out as part of the Six Nations, with Scotland having last won in 2021.
Title: Scotland national rugby union team
Content:  Scotland competes annually in the Six Nations Championship, which is played against five other European nations: France, England, Ireland, Italy and Wales. The Six Nations started out as the Home Nations Championship in 1883, with Scotland sharing the championship with England in 1886 before winning the title outright for the first time a year later. Scotland have won the title outright 15 times and shared the championship a further nine times. Scotland have won three Grand Slams (including the Triple Crown) in 1925, 1984 and 1990, in addition to a further seven Triple Crowns. They also contest the Calcutta Cup with England as part of the championship. Scotland were the winners of the last Five Nations in 1999, before Italy joined the competition to make it the Six Nations.
Title: Scotland national rugby union team
Content:  The Calcutta Cup was donated to the Rugby Football Union in 1878 by the members of the short-lived Calcutta Rugby Club. The members had decided to disband: the cup was crafted from melted-down silver rupees which became available when the Club's funds were withdrawn from the bank. The Cup is unique in that it is competed for annually only by England and Scotland. The first Calcutta Cup match was played in 1879 and, since that time, over 100 matches have taken place.
Title: History of rugby union matches between England and Scotland
Content:  The Calcutta Cup has been the trophy for the annual fixture between the teams since 1879 and is currently played for in the Six Nations Championship match.
Title: Rugby union in Scotland
Content:  The first international rugby union match in the world was played between England and Scotland in Edinburgh in 1871. Scotland won 4–1. The national side is considered by the IRB to belong in the top tier of nations, although they are not as competitive as the elite sides such as New Zealand or South Africa. They usually play their home matches at Murrayfield Stadium in the West End of Edinburgh. Scotland contest the Calcutta Cup with England as part of the Six Nations Championship. The Calcutta Cup was last won by Scotland in the 2021 Six Nations Championship beating England 11-6. Every four years the British and Irish Lions go on tour with players from Scotland as well as England, Ireland and Wales. Scottish players are also regularly selected to represent The Barbarians.
Title: List of Scottish Cup finals
Content:  The Scottish Football Association Challenge Cup, commonly known as the Scottish Cup, is a knockout cup competition in Scottish football. Organised by the Scottish Football Association, it is the third oldest existing football competition in the world, having commenced in the 1873–74 season just two years after the first FA Cup. The winners are awarded the world's oldest trophy, minted in 1885. Celtic hold the record for most wins with 40, and the most final appearances with 59. St Johnstone are the current holders, having beaten Hibernian 1–0 in the 2021 final.
Title: Scotland national rugby union team
Content:  1955 to 1963 were an improvement. There were no wins over England, but three of the games were drawn. Occasional wins were recorded against Wales, Ireland and France. 1964 was a good year for Scotland. New Zealand were held to a 0–0 draw, the last international match in which no points were scored. The Calcutta Cup was won 15–6, the first time since 1950 and they shared the Five Nations title in 1964 with Wales. In 1971 the SRU appointed Bill Dickinson as their head coach, after years of avoidance, as it was their belief that rugby should remain an amateur sport. He was officially designated 
Title: Calcutta Cup
Content:  Despite the initial request of the Calcutta Club that the trophy be used as rugby's answer to football's FA Cup, the RFU refused to turn the Calcutta Cup into a knock-out competition for English club sides. They believed that "competitiveness" ran against the amateur ethos and instead decided that a game should be played each year between England and Scotland and whoever wins should keep it for that year. The first Calcutta Cup match was played at Raeburn Place, Edinburgh, on 10 March 1879 and ended in a draw; Scotland scored a drop goal and England a goal. The following year on 28 February 1880 England became the first winners of the Calcutta Cup when they defeated Scotland by two goals & three tries to one goal in Manchester. Matches have continued on an annual basis except for two 

Question: when's the last time scotland won the calcutta cup?
Answer: 2018.