67% (2001)

71% (2000)

61% (2008)

55% (1987)

46% (2010)

62% (1986)

53% (2010)

42% (1983)

71% (1992)

0% (2007)

42% (2009)

56% (2004)

60% (1983)

44% (2010)

43% (2007)

48% (2009)

55% (2007)

60% (2003)

52% (2009)

51% (1972)