65% (2015)

68% (2011)

52% (2002)

61% (1998)

60% (1996)

65% (2007)

61% (1997)

67% (2003)

60% (2017)

60% (1994)

70% (2013)

73% (2009)

55% (2014)

59% (1990)

80% (2017)

72% (2017)

70% (2016)

64% (1999)

69% (1982)

61% (1993)