65% (2008)

70% (2006)

59% (1999)

58% (2004)

63% (2001)

55% (2003)

57% (2006)

71% (2001)

62% (2000)

57% (2008)

56% (2000)

67% (1995)

72% (2005)

73% (2000)

60% (2007)

83% (1989)

77% (2008)

0% (1984)

80% (2009)

60% (1970)