0% (1980)

70% (1989)

80% (2009)

80% (2017)

45% (1993)

60% (2010)

32% (1989)

70% (2010)

76% (1996)

83% (1998)

80% (2017)

65% (1999)

77% (2018)

67% (2017)

61% (1970)

80% (2015)

55% (2008)

90% (1975)

70% (2005)

52% (2019)