75% (2004)

80% (1993)

73% (2008)

75% (2006)

71% (2008)

71% (1994)

74% (2009)

60% (2010)

75% (2002)

75% (2009)

72% (1994)

42% (2009)

57% (2001)

70% (1997)

62% (2008)

66% (1996)

71% (1998)

50% (2003)

85% (1982)

64% (1992)