77% (2003)

53% (1996)

46% (2004)

52% (1997)

50% (1996)

40% (2007)

30% (1997)

47% (1998)

46% (1992)

57% (1996)

52% (1997)

75% (1994)

40% (1994)

55% (1996)

0% (1996)

45% (1996)

50% (1995)

40% (1992)

20% (1993)

30% (1995)