year  wymidx-jja
1948   1.860
1949   0.566
1950   0.994
1951  -0.361
1952   0.699
1953   0.044
1954   1.348
1955   0.871
1956   0.247
1957  -0.121
1958   0.633
1959   0.074
1960   1.046
1961   0.987
1962   0.184
1963  -0.471
1964   0.946
1965   0.539
1966  -0.092
1967   0.876
1968   0.573
1969   0.549
1970   1.448
1971   0.681
1972  -1.506
1973   0.038
1974  -0.265
1975   0.574
1976   0.069
1977   0.372
1978   1.085
1979  -1.163
1980   0.914
1981   1.117
1982   0.537
1983  -0.740
1984   0.841
1985   1.896
1986   0.508
1987  -0.913
1988   0.482
1989  -0.149
1990   0.937
1991   0.444
1992  -0.835
1993  -0.089
1994   1.170
1995  -0.154
1996  -0.776
1997  -1.398
1998  -0.097
1999   0.625
2000   0.262
2001   0.508
2002  -0.284
2003  -0.468
2004   0.207
2005   0.065
2006  -0.491
2007  -0.926
2008  -0.712
2009  -2.686
2010  -1.889
2011  -2.011
2012  -1.182
2013  -1.165
2014  -1.527
2015  -3.353
2016  -1.212
2017   0.176
2018   0.083
2019  -1.045