53% (1998)

51% (1994)

73% (2003)

68% (2003)

61% (1996)

44% (2000)

37% (2002)

36% (1995)

68% (1996)

53% (2001)

65% (2003)

60% (2004)

60% (1997)

62% (1998)

61% (2000)

46% (1994)

58% (1997)

56% (1997)

48% (2002)

30% (1997)