84% (2005)

87% (2007)

68% (2007)

30% (1992)

64% (1996)

57% (2005)

81% (1990)

70% (2001)

35% (2005)

58% (2007)

70% (2002)

84% (2003)

42% (2007)

64% (2000)

50% (1994)

59% (2012)

53% (2008)

83% (1991)

56% (2009)

70% (2005)