65% (2011)

75% (1996)

64% (2000)

60% (2000)

59% (2001)

65% (1997)

58% (2001)

60% (2003)

75% (2005)

77% (2001)

55% (2006)

55% (2010)

58% (2014)

46% (2002)

49% (2013)

71% (1996)

70% (2002)

53% (2008)

63% (2007)

43% (2012)