54% (1996)

54% (2006)

63% (2008)

48% (2004)

60% (1986)

59% (1959)

59% (2001)

56% (2013)

54% (2012)

54% (2000)

44% (2017)

59% (1999)

60% (1970)

60% (2020)

51% (1982)

62% (1982)

40% (1994)

69% (2015)

46% (2005)

0% (2025)