54% (1994)

64% (1991)

71% (1991)

48% (1994)

56% (1991)

56% (1996)

66% (1995)

61% (1999)

59% (1991)

53% (1993)

50% (2002)

46% (1997)

35% (1999)

67% (1993)

55% (2005)

62% (2003)

56% (1991)