61% (2005)

58% (2012)

56% (2011)

54% (2008)

63% (2015)

70% (2009)

65% (2014)

78% (2001)

71% (1995)

0% (2005)

56% (2013)

70% (2014)

53% (2016)

62% (2010)

58% (1999)

73% (2003)

0% (2011)

37% (1992)

58% (2004)

50% (2006)