Year    ExtAnom
1979         5.3
1980        -3.8
1981        -2.5
1982         5.7
1983         2.9
1984        -7.9
1985        -5.5
1986         8.4
1987        10.1
1988        -4.2
1989         1.6
1990         2.3
1991         4.3
1992        -2.8
1993       -16.4
1994           7
1995        18.6
1996        -1.8
1997       -17.8
1998         1.6
1999        -1.5
2000        -3.5
2001        26.7
2002        -2.8
2003        29.1
2004        20.6
2005        -0.4
2006       -10.3
2007        -2.1
2008        27.1