56% (1998)

63% (2006)

44% (2004)

59% (2005)

58% (2008)

72% (1996)

51% (2005)

56% (1996)

35% (2004)

65% (1998)

56% (2009)

51% (2004)

40% (2002)

52% (2000)

56% (2004)

47% (1997)

37% (1998)

46% (1995)

60% (2006)

40% (2004)