70% (2011)

71% (1990)

76% (2002)

76% (1997)

71% (1992)

71% (1999)

69% (1990)

67% (1994)

48% (2006)

70% (1996)

65% (2008)

51% (2017)

60% (2011)

68% (2003)

66% (2001)

66% (1991)

0% (1993)

46% (1989)

59% (2004)

60% (1999)