66% (2003)

69% (2001)

68% (2006)

58% (2011)

67% (2005)

66% (2014)

61% (2015)

59% (2011)

54% (2017)

67% (2008)

51% (2021)

60% (2005)

50% (2009)

60% (2008)

0% (1970)