66% (1998)

63% (2015)

65% (2021)

55% (1986)

61% (2002)

58% (1978)

58% (2003)

57% (2010)

61% (2000)

65% (2003)

62% (2001)

61% (1995)

69% (2018)

60% (2013)

59% (2009)

74% (2015)

60% (2007)

65% (2017)

70% (2013)

0% (1992)