47% (2004)

67% (2000)

66% (2003)

60% (1997)

68% (2004)

67% (2007)

54% (2012)

59% (2001)

57% (2004)

51% (2003)

56% (1999)

59% (2006)

38% (2011)

0% (1999)

60% (2009)

51% (2004)

57% (1993)

0% (1971)

64% (2012)

70% (2002)