60% (1988)

71% (1989)

80% (2003)

36% (2012)

61% (1990)

40% (1986)

35% (1993)

62% (1986)

63% (1988)

0% (1986)

0% (1991)

0% (1990)

60% (1990)

77% (2008)

70% (1997)

80% (1999)

62% (1989)

0% (1992)

50% (1989)

0% (1989)