57% (1992)

60% (2005)

53% (2000)

30% (2007)

62% (2017)

43% (1998)

60% (2001)

45% (1999)

61% (1995)

68% (2018)

51% (1990)

45% (2006)

63% (1988)

56% (2003)

54% (1960)

38% (2005)

68% (1992)

70% (2008)

69% (2020)

76% (2001)