54% (1989)

47% (2015)

51% (2008)

47% (2012)

58% (1998)

40% (1987)

53% (1999)

48% (2006)

52% (1997)

49% (2003)

46% (2016)

49% (2003)

61% (1989)

47% (1987)

37% (1994)

47% (2007)

49% (2016)

62% (1998)

52% (1988)

48% (2003)