year  wymidx-jjas
1948   2.265
1949   0.845
1950   1.249
1951  -0.798
1952   0.736
1953   0.197
1954   1.989
1955   0.824
1956   0.607
1957  -0.319
1958   1.179
1959   0.229
1960   1.296
1961   1.710
1962   0.156
1963  -0.741
1964   1.350
1965   0.223
1966  -0.563
1967   0.918
1968   0.247
1969  -0.040
1970   1.388
1971   0.359
1972  -2.819
1973   0.074
1974  -0.917
1975   0.389
1976  -0.916
1977  -0.534
1978   0.785
1979  -1.931
1980   0.494
1981   0.880
1982  -0.021
1983  -0.715
1984  -0.010
1985   1.510
1986  -0.145
1987  -1.688
1988   0.264
1989  -0.543
1990   0.665
1991  -0.049
1992  -1.069
1993  -0.157
1994   0.202
1995  -0.410
1996  -0.989
1997  -2.564
1998  -0.106
1999   0.395
2000  -0.383
2001  -0.026
2002  -1.062
2003  -0.698
2004  -0.472
2005   0.002
2006  -0.929
2007  -0.987
2008  -0.826