61% (1983)

71% (2000)

64% (1990)

65% (2010)

50% (2005)

60% (1990)

90% (1995)

55% (1994)

53% (2000)

42% (2003)

64% (1990)

40% (1989)

50% (1992)

62% (1978)

0% (1995)

60% (2015)

71% (1991)

42% (2012)

52% (1995)

38% (1997)