Year   ExtAnom
1979      3.71
1980      2.92
1981      5.20
1982      6.48
1983      8.07
1984      0.54
1985     -0.05
1986      3.71
1987     -1.14
1988     -0.55
1989      2.82
1990     -4.71
1991     -4.12
1992      5.10
1993     -4.31
1994      1.23
1995     -9.37
1996      2.62
1997     -5.01
1998     -4.71
1999     -5.01
2000     -3.42
2001     -8.67
2002     -6.00
2003     -6.29
2004     -4.91
2005    -11.54
2006    -14.12
2007    -19.47
2008    -10.55