69% (1997)

72% (2010)

54% (2020)

51% (1990)

74% (2020)

54% (2006)

67% (2011)

65% (2021)

61% (1975)

42% (1996)

55% (2015)

55% (1969)

74% (2005)

55% (1997)

62% (2013)

50% (1990)

64% (1961)

62% (2000)

65% (1934)

65% (1999)