year  wymidx-jun
1948   1.331
1949   0.416
1950   0.151
1951  -0.429
1952   0.425
1953  -0.238
1954   0.996
1955   0.915
1956   0.018
1957  -0.759
1958  -0.048
1959  -1.132
1960   0.881
1961  -0.126
1962   0.142
1963  -0.524
1964   0.307
1965   1.361
1966  -0.082
1967  -0.537
1968  -0.350
1969   0.624
1970   1.155
1971   1.473
1972  -2.089
1973  -0.174
1974  -0.310
1975   0.900
1976  -0.695
1977  -0.420
1978   1.314
1979  -1.766
1980   0.240
1981   0.018
1982  -0.355
1983  -1.841
1984   1.548
1985   2.482
1986   0.692
1987  -0.913
1988   0.483
1989   0.191
1990   0.890
1991  -0.553
1992  -1.694
1993  -0.899
1994   1.340
1995  -0.698
1996  -1.413
1997  -2.860
1998  -0.108
1999   0.279
2000   0.535
2001   1.229
2002   0.121
2003  -0.572
2004   0.936
2005   0.043
2006  -0.850
2007  -0.999