Year   ExtAnom
1979      1.12
1980      1.87
1981     -1.03
1982      7.47
1983      3.81
1984     -4.80
1985     -4.37
1986      6.51
1987      0.04
1988      1.98
1989      2.52
1990      0.69
1991     -1.36
1992      3.38
1993     -1.03
1994      2.09
1995     -3.73
1996      1.12
1997     -5.66
1998     -4.69
1999     -2.00
2000     -3.94
2001     -7.49
2002     -5.13
2003     -6.85
2004     -8.68
2005     -9.00
2006    -10.29
2007    -27.09
2008     -9.54