74% (2006)

60% (2003)

61% (1997)

42% (2004)

63% (2004)

61% (2001)

46% (2002)

56% (2003)

41% (2016)

55% (1997)

50% (2005)

40% (2002)

60% (2001)

50% (2006)

75% (2001)

71% (2000)

36% (2001)

30% (2005)

61% (1998)

54% (2009)