59% (2009)

44% (2011)

47% (2010)

63% (1991)

52% (1974)

40% (2002)

47% (2011)

65% (2001)

65% (2019)

72% (2010)

58% (2015)

65% (1996)

58% (1999)

71% (1992)

71% (2005)

48% (2006)

62% (1993)

46% (2011)

61% (1997)

71% (2001)