year  wnpmidx-jja
1948   1.630
1949  -0.568
1950   0.409
1951   0.122
1952   0.952
1953   0.322
1954  -1.692
1955  -1.631
1956  -0.727
1957  -0.384
1958  -0.334
1959  -1.329
1960   0.317
1961   1.078
1962   0.145
1963   0.800
1964  -0.613
1965   0.451
1966  -1.161
1967   1.176
1968  -0.196
1969  -0.582
1970  -0.268
1971  -0.266
1972   1.068
1973  -0.257
1974   0.101
1975  -0.221
1976   0.336
1977  -0.603
1978   1.114
1979   0.347
1980  -0.492
1981   1.144
1982   0.862
1983  -1.516
1984   0.882
1985   1.306
1986   1.409
1987  -0.448
1988  -1.894
1989  -0.013
1990   1.434
1991   0.128
1992  -0.065
1993  -0.885
1994   1.175
1995  -1.397
1996  -1.578
1997   0.719
1998  -2.946
1999  -0.080
2000   0.111
2001   1.560
2002   0.959
2003  -0.721
2004   1.511
2005  -0.018
2006   0.599
2007  -1.279