72% (2018)

67% (2014)

61% (1993)

58% (1987)

68% (2013)

82% (1987)

35% (1993)

80% (2015)

0% (1987)

80% (2011)

64% (2008)

39% (1989)

73% (2012)

0% (2012)

80% (2009)

0% (2010)