65% (2008)

62% (2000)

63% (2001)

50% (2012)

71% (2001)

70% (2006)

56% (2006)

58% (2004)

0% (1987)

60% (1999)

72% (2005)

0% (2006)

100% (2000)

40% (1996)

57% (2000)

70% (2012)

55% (2003)

0% (1989)

60% (1970)

77% (2008)