70% (2011)

52% (2017)

76% (1997)

71% (1999)

77% (2002)

51% (2013)

71% (1999)

69% (1996)

68% (2004)

60% (2011)

60% (2007)

71% (1992)

50% (2007)

66% (2001)

59% (2010)

52% (1997)

66% (1991)

45% (1993)

48% (2006)

64% (2008)