Year   ExtAnom
1979     -2.26
1980      2.92
1981      0.76
1982     -1.33
1983      0.45
1984      2.12
1985      1.07
1986     -4.29
1987     -2.56
1988      2.30
1989     -0.96
1990     -1.39
1991     -1.15
1992      0.15
1993      1.01
1994      1.07
1995     -1.64
1996      0.76
1997      0.08
1998      2.42
1999      0.52
2000     -0.04
2001     -2.93
2002     -2.01
2003      1.69
2004      1.87
2005      3.16
2006      3.23
2007     -0.78
2008      1.99