year  wymidx-jun
1948   1.348
1949   0.430
1950   0.163
1951  -0.418
1952   0.439
1953  -0.227
1954   1.012
1955   0.931
1956   0.030
1957  -0.750
1958  -0.036
1959  -1.124
1960   0.897
1961  -0.114
1962   0.155
1963  -0.513
1964   0.321
1965   1.378
1966  -0.070
1967  -0.527
1968  -0.339
1969   0.638
1970   1.171
1971   1.491
1972  -2.084
1973  -0.162
1974  -0.299
1975   0.916
1976  -0.686
1977  -0.409
1978   1.331
1979  -1.760
1980   0.253
1981   0.030
1982  -0.344
1983  -1.835
1984   1.566
1985   2.503
1986   0.707
1987  -0.904
1988   0.497
1989   0.204
1990   0.906
1991  -0.543
1992  -1.688
1993  -0.890
1994   1.358
1995  -0.689
1996  -1.406
1997  -2.858
1998  -0.096
1999   0.293
2000   0.550
2001   1.246
2002   0.134
2003  -0.562
2004   0.951
2005   0.055
2006  -0.841
2007  -0.990
2008  -0.739