78% (2020)

78% (2017)

66% (1999)

63% (1999)

36% (1988)

43% (1994)

44% (1997)

54% (1996)

53% (1998)

43% (1999)

66% (1995)

67% (1994)

46% (1998)

59% (1997)

60% (1998)

64% (1998)

62% (1993)

62% (1996)

59% (1989)

48% (1987)