82% (2000)

82% (2005)

75% (2017)

86% (2008)

71% (2003)

70% (1996)

50% (2003)

73% (1997)

79% (1998)

63% (1997)

75% (1999)

68% (1999)

73% (1999)

75% (2001)

85% (2001)

45% (2000)

60% (1996)