50% (1993)

0% (2003)

70% (2008)

75% (1991)

50% (1992)

43% (1994)

40% (1990)

30% (2013)

0% (2003)

0% (2006)

50% (1994)

77% (1996)

0% (2005)

80% (1990)

0% (2020)

70% (1994)

10% (1970)

0% (1970)

0% (2000)