Year	Thousands Of Dollars
1917	3515.00
1918	594.000
1919	1831.00
1920	5625.00
1921	-161.000
1922	447.000
1923	1203.00
1924	2192.00
1925	1073.00
1926	746.000
1927	408.000
1928	96.0000
1929	836.000
1930	-1553.00
1931	-3196.00
1932	-3401.00
1933	487.000
1934	-1126.00
1935	-484.000
1936	1275.00
1937	1150.00
1938	-1846.00
1939	-377.000
1940	603.000
1941	3456.00
1942	401.000