Year    ExtAnom
    1979      12.45
    1980     -18.78
    1981     -13.57
    1982      13.41
    1983      -2.89
    1984      -3.85
    1985      -3.44
    1986      -5.35
    1987       0.81
    1988      -6.18
    1989      -6.18
    1990       2.45
    1991       2.59
    1992       1.63
    1993      -1.66
    1994       5.06
    1995       6.56
    1996       9.44
    1997      -2.89
    1998       3.55
    1999       0.40
    2000       6.43
    2001       3.00
    2002      -4.26
    2003       4.78
    2004       6.70
    2005       2.73
    2006     -10.01
    2007      -4.12
    2008      17.52