70% (2011)

66% (1999)

65% (2009)

56% (2015)

62% (2008)

68% (1996)

71% (1993)

71% (2006)

71% (2018)

60% (2015)

63% (2002)

59% (2010)

55% (2018)

63% (2004)

69% (2000)

52% (2006)

64% (2011)

65% (1997)

61% (1998)

66% (1991)