77% (2022)

80% (2024)

67% (2024)

65% (2018)

46% (2013)

40% (2019)

64% (2008)

55% (2007)

58% (2015)

36% (2010)

63% (2017)

50% (2007)

20% (2003)

0% (1970)

42% (2012)

61% (1993)

45% (2002)

58% (2009)

53% (1999)