75% (2000)

0% (1970)

60% (2003)

80% (1985)

90% (1996)

78% (1991)

90% (1989)

90% (2007)

70% (2009)

0% (1998)

80% (1999)

70% (2006)

60% (2009)

85% (1997)

50% (2000)

0% (2005)

100% (1990)

90% (2006)

0% (2014)

40% (2021)