Election Number of
popular votes
 % of
popular votes
Total
elected seats
+/−
1988 139,982Steady 22.16Steady
61 / 264
1991 170,757Increase 32.11Increase
83 / 272
22Increase
1994 242,557Increase 35.34Increase
121 / 346
38Increase
1999 271,251Increase 33.45Decrease
122 / 390
1Increase
2003 459,640Increase 44.67Increase
194 / 400
72Increase
2007 445,781Decrease 39.15Decrease
127 / 405
30Decrease
2011 464,512Increase 39.34Increase
103 / 412
18Decrease