66% (2003)

60% (1997)

68% (2004)

67% (2007)

59% (2006)

57% (2004)

56% (1999)

47% (2004)

70% (1991)

54% (2012)

51% (2003)

25% (2004)

20% (2013)

59% (2001)

51% (2004)

60% (2009)

0% (1999)

57% (1993)

37% (2000)

0% (1971)