Year   ExtAnom
1979     -1.77
1980      1.75
1981      0.90
1982     -0.54
1983      0.58
1984     -0.38
1985      1.54
1986     -4.06
1987     -0.43
1988     -0.49
1989     -2.46
1990     -1.56
1991     -0.91
1992     -1.72
1993     -0.33
1994      1.17
1995     -0.01
1996      0.69
1997      2.23
1998      2.18
1999      1.54
2000      2.07
2001     -1.77
2002     -2.94
2003     -0.91
2004      1.97
2005      2.18
2006      3.36
2007      2.45
2008     -1.24