Year   ExtAnom
1979      3.56
1980      1.26
1981      3.39
1982      4.38
1983      1.59
1984      0.35
1985      2.00
1986     -0.47
1987      3.39
1988     -1.13
1989      1.26
1990     -3.93
1991      0.60
1992     -0.22
1993     -1.38
1994     -0.47
1995     -5.00
1996     -0.47
1997     -2.03
1998     -2.53
1999     -0.47
2000     -3.68
2001     -3.84
2002     -3.84
2003     -3.19
2004     -5.32
2005     -7.13
2006     -9.03
2007     -5.49
2008     -5.90