67% (1997)

55% (2008)

75% (2000)

28% (2001)

51% (2005)

52% (2000)

47% (1997)

20% (1997)

45% (2005)

48% (2003)

55% (1999)

40% (2005)

41% (1999)

35% (1995)

58% (1996)

56% (2004)

43% (1999)

15% (2000)

56% (2000)

40% (1994)