56% (2005)

54% (2007)

65% (2009)

68% (2004)

59% (2004)

66% (2003)

57% (2001)

57% (2005)

54% (1996)

61% (2002)

52% (2002)

45% (2014)

51% (2004)

59% (2005)

70% (2002)

59% (2000)

57% (2000)