Year      ExtAnom
    1979          4.4
    1980          2.4
    1981         -0.9
    1982          2.6
    1983          2.2
    1984         -0.8
    1985          2.0
    1986          2.1
    1987          1.3
    1988          2.4
    1989         -1.4
    1990          0.8
    1991         -1.6
    1992         -1.8
    1993          0.8
    1994         -1.1
    1995         -2.7
    1996         -4.0
    1997         -1.1
    1998         -0.6
    1999         -2.2
    2000         -3.0
    2001         -0.9
    2002         -2.0
    2003         -1.6
    2004         -4.4
    2005         -6.4
    2006         -8.4
    2007         -6.8
    2008         -3.4