50% (1976)

51% (1996)

55% (1998)

61% (2000)

72% (2003)

52% (1991)

48% (1995)

40% (2004)

47% (2004)

58% (1999)

50% (2003)

43% (1984)

100% (1988)

0% (1999)

0% (2007)

80% (2015)

0% (2008)

40% (1991)

10% (1999)

59% (1996)