60% (2010)

60% (2009)

52% (2008)

52% (2005)

63% (2004)

67% (2010)

56% (2004)

47% (2005)

58% (1996)

71% (1996)

96% (1996)

47% (1995)

62% (2005)

73% (2003)

46% (1995)

49% (2005)

51% (2010)

62% (1996)

48% (1998)

62% (2001)