year  wnpmidx-jja
1948   2.120
1949  -0.144
1950   0.750
1951  -0.251
1952   1.019
1953   0.332
1954  -1.266
1955  -2.160
1956  -0.328
1957  -0.189
1958  -0.040
1959  -1.383
1960   0.340
1961   1.509
1962   0.337
1963   0.753
1964  -0.318
1965   0.605
1966  -0.930
1967   1.222
1968   0.444
1969   0.028
1970  -0.386
1971  -0.445
1972   0.699
1973  -0.921
1974  -0.719
1975  -0.690
1976   0.502
1977   0.195
1978   1.203
1979  -0.213
1980  -0.189
1981   0.457
1982   1.068
1983  -1.971
1984   0.248
1985   1.405
1986   1.307
1987  -0.406
1988  -2.207
1989  -0.091
1990   1.474
1991   0.524
1992  -0.039
1993  -0.885
1994   1.347
1995  -1.310
1996  -1.113
1997   0.094
1998  -2.857
1999  -0.140
2000  -0.111
2001   1.182
2002   1.039
2003  -0.244
2004   0.848
2005   0.437
2006   0.417
2007  -0.861
2008  -1.098