61% (1996)

48% (1993)

36% (1988)

43% (1994)

64% (1998)

66% (1995)

59% (1989)

60% (1998)

78% (2017)

51% (1990)

35% (1994)

37% (1991)

46% (1998)

63% (1999)

48% (1987)

53% (1990)

53% (1998)

60% (1998)

40% (1995)

38% (1992)