48% (1994)

20% (1997)

57% (1999)

28% (2000)

30% (1998)

57% (2001)

46% (1995)

37% (1996)

50% (1997)

35% (2003)

42% (1993)

50% (1995)

36% (1998)

37% (1995)

10% (1996)