74% (1999)

82% (1993)

78% (2006)

0% (2009)

71% (2005)

60% (1996)

70% (2002)

80% (1981)

80% (2004)

85% (1994)

60% (2000)

57% (2003)

70% (2013)

80% (2006)

69% (1997)

62% (1990)

82% (1999)

63% (1989)

0% (2001)

90% (1997)