72% (1999)

70% (1996)

77% (1997)

70% (2011)

50% (2007)

77% (2002)

71% (1992)

60% (2011)

68% (2003)

51% (2017)

10% (2017)

71% (1999)

66% (2001)

68% (2004)

64% (2008)

59% (2010)

60% (2007)

51% (2013)

40% (1991)

48% (2006)