Year	Thousands Of Dollars
1916	23507.0
1917	20388.0
1918	22307.0
1919	29337.0
1920	66140.0
1921	88563.0
1922	56091.0
1923	49930.0
1924	62498.0
1925	59215.0
1926	55665.0
1927	61893.0
1928	50092.0
1929	53543.0
1930	86370.0
1931	98778.0
1932	94962.0
1933	60212.0
1934	85272.0
1935	40253.0
1936	34290.0
1937	34855.0
1938	40117.0
1939	29414.0
1940	33524.0