40% (1992)

50% (2013)

60% (1991)

70% (1999)

80% (1999)

10% (2007)

65% (1993)

70% (2007)

80% (1999)

90% (2004)

80% (1994)

0% (2003)

50% (1992)

30% (1998)

20% (2005)

70% (2010)

40% (1998)

0% (2010)

85% (1990)

70% (2015)