Year   ExtAnom
1979     -1.29
1980      3.47
1981      1.45
1982     -1.45
1983     -0.85
1984     -2.82
1985      0.85
1986     -3.59
1987     -1.40
1988      1.83
1989     -1.29
1990     -0.47
1991     -0.41
1992     -0.25
1993      0.63
1994     -0.03
1995      0.19
1996     -0.52
1997     -0.69
1998      3.04
1999      2.54
2000      1.07
2001     -1.02
2002     -0.52
2003      0.57
2004      1.67
2005      2.38
2006      3.91
2007      2.05
2008     -1.02