his helmet ought to be held NA

4.034063 0.0000% 1926 0.187020 5.347008 6.5229% 1941 1.623510 0.615949 6.1527% 1940 0.992344 1.007715 2.3623% 1939 1.739760 0.574792 -1.5482% 1938 1.767118 0.565893 -1.5312% 1937 1.637478 0.610695 3.9669% 1936 0.887346 1.126956 3.2811% 1934 1.820996 0.549150 8.9328% 1933 1.599993 0.625003 -2.6088% 1932 0.756567 1.321759 -11.5407% 1931 0.890429 1.123054 -8.4517% 1930 0.946677 1.056327 -2.7367% 1929 1.972893

abasing