76% (2000)

61% (1999)

65% (1997)

60% (2000)

72% (1999)

68% (2000)

59% (1998)

58% (1997)

56% (2000)

65% (1999)

60% (1998)

58% (1998)

61% (1999)

62% (2000)

63% (1997)

58% (1998)

59% (1999)

73% (1999)

50% (2021)

58% (2007)