53% (2003)

60% (1999)

58% (2000)

53% (2010)

46% (2007)

61% (1999)

62% (2008)

65% (1995)

48% (2011)

56% (2003)

48% (1990)

65% (1987)

19% (1992)

54% (2019)

59% (2013)

70% (2008)

61% (2001)

48% (1974)

62% (1997)

65% (2015)