51% (2004)

66% (2006)

62% (2013)

32% (1993)

47% (2015)

62% (2003)

47% (2001)

38% (1999)

60% (1998)

62% (1995)

53% (2005)

47% (1997)

59% (2003)

40% (2007)

57% (2014)

46% (2015)

20% (1988)

50% (2012)

59% (2002)

20% (1999)