69% (1991)

64% (2020)

63% (1995)

71% (1997)

64% (1997)

64% (1997)

62% (1997)

51% (1993)

50% (1989)

54% (2012)

57% (2003)

46% (1992)

39% (1992)

42% (2000)

55% (1999)

55% (1990)

42% (1992)

42% (1996)

60% (1997)

41% (1992)