62% (1995)

64% (1997)

51% (1991)

40% (1998)

39% (1990)

45% (2000)

67% (1999)

43% (1999)

44% (1994)

50% (1999)

50% (1995)

30% (1999)

72% (2012)

70% (1997)

43% (1990)

55% (1993)

36% (1997)

0% (1977)

67% (1987)

56% (1999)