In 1988, 39 SMCs were grouped into 13 three-member GRCs, making up 39 out of a total of 81 elected seats in Parliament. The Constitution and the Parliamentary Elections Act were changed in 1991 and again in 1996 to increase the maximum number of MPs in each GRC from three to four, and then to six. In the 2001 general election, three- and four-member GRCs were replaced by five- and six-member GRCs. There were nine five-member GRCs and five six-member GRCs, making up 75 out of the 84 elected seats in Parliament. This arrangement remained unchanged at the 2006 elections.