49% (1997)

61% (2009)

61% (2010)

57% (2006)

56% (2009)

65% (2008)

59% (2020)

69% (2002)

60% (2001)

53% (2003)

62% (2001)

64% (2023)

76% (2006)

50% (2000)

60% (2007)

35% (1999)

65% (1999)

0% (1970)

0% (1970)