75% (2013)

70% (2021)

50% (2024)

72% (2004)

71% (2006)

62% (2005)

58% (2004)

68% (2017)

56% (2007)

66% (2005)

64% (2010)

62% (2015)

66% (2005)

50% (2004)

55% (2008)

46% (2007)

0% (1970)