39% (1994)

57% (1999)

28% (2000)

35% (2003)

37% (1996)

42% (1993)

36% (1998)

57% (2001)

20% (1997)

50% (1995)

10% (1996)

46% (1995)

37% (1995)

50% (1997)

30% (1998)