54% (1993)

35% (1995)

28% (2000)

10% (1995)

22% (1997)

14% (1997)

80% (2000)

58% (1997)

36% (1994)

30% (2005)

40% (1996)

10% (1997)

30% (1993)

13% (1996)

32% (1994)

30% (1998)

50% (1996)

30% (1992)

13% (1995)

30% (1997)