49% (1999)

53% (2003)

47% (1995)

45% (2008)

48% (1995)

42% (2011)

55% (2006)

45% (2002)

61% (2001)

53% (2003)

53% (2004)

54% (1998)

67% (2007)

44% (1996)

60% (1997)

47% (1996)

48% (2005)

49% (2005)

37% (1996)

53% (2001)