facilities, for sports, recreation and other useful purposes. Its membership consists of: two persons appointed by the University of Calgary; from the City of Calgary, the Commissioner of Finance and the Commissioner of Planning and Community Services; and two other persons appointed by the four other members. The two other members were appointed by the McMahon brothers until the financing guaranteed by the McMahons was retired in 1973. The society operates the stadium under two leases and a four-year, three-month agreement with the City of Calgary, approved on January 7, 2007. Seating With permanent seating totalling 35,650, the stadium is the fifth-largest stadium in Canada. It was expanded in several stages from its original 22,000-seat capacity in 1960 to 38,205 in 1988. More recent renovations in 2001 and 2005, in which luxury boxes replaced bleacher seating in the higher rows of the grandstands, reduced the capacity to 37,317 in 2001, and to its current 35,650 in 2005. In 2007, Calgary Stampeders president Ted Hellard proposed a further reduction of the stadium's capacity by approximately 4,200 seats to accommodate further luxury boxes, with renovations to be underwritten with personal seat licenses. For special events such as Grey Cup games, temporary bleachers have been built in the facility's end zones. These seats accounted for a stadium attendance record 46,020 spectators at the 97th Grey Cup, between the Montreal Alouettes and Saskatchewan Roughriders on November 29, 2009. Field The stadium features an infilled artificial FieldTurf field installed in 2006. Previously, the stadium installed its first AstroTurf artificial playing surface in 1975 amid concerns the original grass field (which was in place from the stadium's opening) would not withstand an intended increase in use of the stadium facilities by professional, amateur and recreational teams. Notable events Football The first football game took place at the stadium on August 15, 1960. The Winnipeg Blue Bombers beat the Calgary Stampeders 38–20. The CFL Grey Cup game was held at stadium in 1975, 1993, 2000, 2009, and 2019. The stadium hosted two CFL All-Star Games, in 1972 and 1978. Hockey It was the site of the 2011 NHL Heritage Classic regular season game between the Calgary Flames and Montreal Canadiens on February 20, 2011. Olympics The stadium was also used for the opening and closing ceremonies of the 1988 Winter Olympics, which required major expansion of its seating area. Concerts The facility is occasionally used as an