57% (1999)

46% (1995)

37% (1995)

28% (2000)

35% (2003)

42% (1993)

57% (2001)

50% (1995)

20% (1997)

39% (1994)

37% (1996)

36% (1998)

30% (1998)

50% (1997)

10% (1996)