61% (2007)

63% (2004)

60% (2005)

51% (1993)

49% (1989)

50% (1990)

56% (1998)

56% (1992)

35% (1988)

48% (1992)

42% (1986)

73% (1983)

100% (2016)

52% (2008)

61% (1998)

60% (2006)

48% (1984)

50% (1999)

60% (2004)

60% (1991)