45% (1993)

71% (2000)

62% (2004)

70% (2001)

80% (2018)

50% (1998)

77% (2009)

75% (2007)

65% (2003)

78% (1988)

71% (2011)

66% (2012)

71% (2013)

66% (2015)

49% (2014)

74% (2013)

67% (2012)

64% (2009)

60% (2008)

97% (2010)