79% (1987)

76% (2000)

74% (1994)

72% (1999)

71% (2006)

20% (2006)

65% (2013)

56% (1993)

37% (2015)

68% (2010)

55% (2014)

49% (1995)

60% (2002)

0% (2018)

60% (2015)

73% (2005)

70% (2001)

30% (2008)

50% (2007)

32% (2019)