50% (2004)

60% (1989)

61% (2006)

39% (1997)

61% (1997)

37% (2009)

60% (1987)

50% (1994)

59% (1996)

66% (2007)

64% (2010)

85% (1995)

52% (2010)

0% (1991)

70% (1993)

35% (1994)

60% (1994)

35% (1993)

65% (1992)

20% (1994)