78% (2022)

65% (2018)

58% (2015)

40% (2019)

63% (2017)

45% (2013)

55% (2007)

68% (2024)

58% (2009)

41% (2012)

61% (1993)

55% (2024)

50% (2007)

36% (2010)

64% (2008)

53% (1999)

45% (2002)

0% (1970)

20% (2003)