82% (2005)

64% (1996)

30% (1992)

70% (2001)

53% (2008)

71% (2003)

65% (2007)

70% (2000)

60% (2000)

87% (2007)

81% (1990)

52% (2012)

35% (2005)

56% (2009)

83% (1991)

40% (1994)

70% (2005)

83% (2003)

83% (1986)

58% (2007)