66% (1997)

58% (1996)

63% (2016)

65% (2011)

67% (2010)

55% (2015)

70% (2005)

60% (2008)

74% (1999)

69% (2014)

64% (2008)

66% (2011)

55% (2011)

47% (2009)

67% (2015)

71% (2015)

61% (2016)

67% (2014)

51% (2009)

65% (2014)