year    return
 1972   15.070
 1973  -21.522
 1974  -34.540
 1975   28.353
 1976   18.177
 1977  -12.992
 1978   -2.264
 1979    4.682
 1980   17.797
 1981  -12.710
 1982   17.033
 1983   18.075
 1984    2.253
 1985   26.896
 1986   17.390
 1987    0.783
 1988   11.677
 1989   25.821
 1990   -8.679
 1991   26.594
 1992    4.584
 1993    7.127
 1994   -1.316
 1995   34.167
 1996   19.008
 1997   31.138
 1998   26.534
 1999   17.881
 2000  -12.082
 2001  -13.230
 2002  -23.909
 2003   26.311
 2004    7.370