30% (1992)

50% (1994)

59% (2012)

81% (1990)

53% (2008)

35% (2005)

84% (2005)

60% (2000)

70% (2005)

62% (1999)

87% (2007)

60% (2000)

85% (2003)

83% (1991)

64% (1996)

68% (2007)

20% (2010)

70% (2000)

90% (2001)

70% (2001)