67% (2005)

51% (1993)

45% (1999)

46% (1998)

47% (1993)

60% (1992)

17% (2003)

40% (1999)

62% (2009)

67% (1993)

29% (2009)

70% (2005)

61% (2004)

64% (2007)

70% (1998)

60% (2004)

53% (1997)

47% (2002)

29% (2006)

40% (2003)