Year    ExtAnom
1979      4.3
1980      2.2
1981      0.1
1982      2.7
1983      2.4
1984     -2.0
1985      0.2
1986      1.6
1987      3.0
1988     -0.2
1989     -0.5
1990     -0.5
1991     -2.4
1992     -0.9
1993      0.6
1994     -0.2
1995     -2.6
1996     -3.0
1997     -0.8
1998      0.8
1999     -1.7
2000     -2.9
2001     -2.4
2002     -1.8
2003     -2.5
2004     -4.5
2005     -8.2
2006     -7.8
2007     -7.0
2008     -4.2