51% (2008)

51% (2007)

75% (2005)

60% (2004)

64% (1999)

69% (1988)

50% (2004)

50% (2006)

70% (1999)

40% (2002)

56% (2007)

60% (2001)

60% (2005)

0% (1997)

70% (2004)