67% (1991)

60% (2002)

54% (1995)

59% (2013)

61% (1999)

63% (1994)

66% (2002)

46% (1991)

56% (1996)

57% (1988)

61% (1996)

51% (1998)

52% (1997)

52% (1993)

0% (1993)

30% (2002)