65% (2009)

56% (2005)

59% (2004)

61% (2002)

53% (2007)

68% (2004)

51% (2004)

57% (2005)

66% (2003)

57% (2001)

54% (1996)

45% (2014)

52% (2002)

59% (2000)

59% (2005)

57% (2000)

70% (2002)