72% (1988)

70% (1999)

70% (1997)

64% (2008)

0% (2003)

98% (1992)

68% (2005)

77% (2000)

73% (2005)

67% (1999)

60% (2001)

73% (2001)

72% (1994)

49% (1996)

70% (1996)

0% (2013)

80% (2002)

82% (1993)

30% (2005)

58% (1997)