70% (1988)

63% (1990)

54% (1995)

50% (2013)

47% (1990)

56% (1994)

49% (1990)

64% (1995)

47% (1991)

51% (2003)

0% (1993)

0% (1995)

0% (1992)

60% (2000)

43% (1991)

19% (1992)

28% (1989)

0% (1988)

0% (1999)

0% (2006)