69% (1993)

49% (2002)

56% (2009)

65% (1999)

68% (2003)

58% (2015)

62% (2002)

61% (1994)

59% (2005)

34% (2010)

41% (2012)

75% (1996)

70% (1986)

40% (2014)

45% (2008)

90% (2001)

90% (2005)