79% (1987)

74% (1994)

76% (2000)

70% (2010)

72% (2006)

74% (1999)

65% (2013)

55% (2014)

70% (2001)

61% (2016)

30% (2008)

72% (2005)

60% (2015)

60% (1986)

63% (2019)

54% (1995)

32% (2019)

60% (2002)

56% (1993)

49% (1995)