50% (2001)

0% (1987)

60% (2003)

60% (1993)

49% (1999)

58% (1999)

68% (1986)

61% (1983)

50% (2002)

53% (2005)

59% (1995)

50% (1985)

53% (1994)

53% (2011)

0% (1996)

42% (1994)

55% (2002)

54% (2006)

50% (2000)

48% (1995)