63% (2006)

63% (2004)

57% (1999)

66% (1997)

71% (1999)

77% (2002)

100% (1996)

61% (2003)

70% (1999)

63% (1997)

63% (2001)

0% (1997)

69% (1997)

69% (2001)

66% (1991)

51% (2002)

66% (1996)

20% (1990)

40% (2000)

45% (2011)