52% (2008)

51% (2002)

56% (1993)

58% (2010)

54% (1997)

58% (2007)

50% (1995)

25% (2004)

80% (1996)

20% (1994)

50% (2007)

42% (2002)

55% (2000)

50% (2007)

25% (2008)