50% (1970)

55% (2005)

80% (1998)

70% (2000)

0% (2002)

78% (2003)

90% (2003)

60% (1999)

70% (1970)

75% (2005)

80% (2006)

10% (1995)

75% (1999)

60% (2005)

70% (2006)

62% (2003)

0% (2001)

0% (1998)

100% (1999)

75% (1999)