77% (2022)

70% (2024)

66% (2018)

61% (2017)

39% (2019)

46% (2013)

36% (2010)

43% (2012)

57% (2007)

0% (1970)

59% (2015)

52% (2007)

64% (2008)

0% (2003)

58% (2009)

61% (1993)

45% (2002)

53% (1999)