75% (2001)

66% (2012)

67% (2022)

58% (2007)

71% (2004)

62% (2008)

64% (2006)

52% (2017)

65% (2002)

51% (1999)

57% (2000)

72% (2000)

62% (2004)

51% (1998)

56% (1997)

50% (2001)

53% (2010)

40% (2007)

0% (1970)

0% (2009)