64% (1999)

61% (2010)

65% (2019)

61% (2012)

48% (1997)

66% (1990)

55% (2000)

49% (2019)

52% (1991)

52% (1974)

60% (1999)

66% (1991)

54% (2003)

62% (1996)

50% (2011)

64% (2010)

46% (2008)

46% (2019)

0% (1970)

56% (2006)