Month Dollars Per Year 1915-01-01 551.000 1915-02-01 552.000 1915-03-01 563.000 1915-04-01 565.000 1915-05-01 562.000 1915-06-01 570.000 1915-07-01 561.000 1915-08-01 570.000 1915-09-01 570.000 1915-10-01 579.000 1915-11-01 579.000 1915-12-01 587.000 1916-01-01 598.000 1916-02-01 617.000 1916-03-01 628.000 1916-04-01 631.000 1916-05-01 646.000 1916-06-01 650.000 1916-07-01 622.000 1916-08-01 654.000 1916-09-01 676.000 1916-10-01 679.000 1916-11-01 693.000 1916-12-01 710.000 1917-01-01 711.000 1917-02-01 715.000 1917-03-01 741.000 1917-04-01 722.000 1917-05-01 762.000 1917-06-01 772.000 1917-07-01 760.000 1917-08-01 778.000 1917-09-01 796.000 1917-10-01 829.000 1917-11-01 853.000 1917-12-01 850.000 1918-01-01 814.000 1918-02-01 836.000 1918-03-01 898.000 1918-04-01 926.000 1918-05-01 971.000 1918-06-01 995.000 1918-07-01 1005.00 1918-08-01 1027.00 1918-09-01 1071.00 1918-10-01 1087.00 1918-11-01 1032.00 1918-12-01 1127.00 1919-01-01 1090.00 1919-02-01 1073.00 1919-03-01 1093.00 1919-04-01 1079.00 1919-05-01 1091.00 1919-06-01 1113.00 1919-07-01 1131.00 1919-08-01 1172.00 1919-09-01 1216.00 1919-10-01 1223.00 1919-11-01 1241.00 1919-12-01 1303.00 1920-01-01 1317.00 1920-02-01 1303.00 1920-03-01 1364.00 1920-04-01 1351.00 1920-05-01 1389.00 1920-06-01 1399.00 1920-07-01 1371.00 1920-08-01 1389.00 1920-09-01 1381.00 1920-10-01 1377.00 1920-11-01 1334.00 1920-12-01 1309.00 1921-01-01 1224.00 1921-02-01 1197.00 1921-03-01 1214.00 1921-04-01 1189.00 1921-05-01 1198.00 1921-06-01 1186.00 1921-07-01 1167.00 1921-08-01 1171.00 1921-09-01 1162.00 1921-10-01 1127.00 1921-11-01 1114.00 1921-12-01 1109.00 1922-01-01 1125.00 1922-02-01 1106.00 1922-03-01 1114.00 1922-04-01 1109.00 1922-05-01 1137.00 1922-06-01 1150.00 1922-07-01 1137.00 1922-08-01 1154.00 1922-09-01 1178.00 1922-10-01 1170.00 1922-11-01 1191.00 1922-12-01 1210.00 1923-01-01 1196.00 1923-02-01 1194.00 1923-03-01 1236.00 1923-04-01 1239.00 1923-05-01 1279.00 1923-06-01 1280.00 1923-07-01 1259.00 1923-08-01 1246.00 1923-09-01 1259.00 1923-10-01 1284.00 1923-11-01 1279.00 1923-12-01 1294.00 1924-01-01 1261.00 1924-02-01 1287.00 1924-03-01 1281.00 1924-04-01 1266.00 1924-05-01 1250.00 1924-06-01 1217.00 1924-07-01 1166.00 1924-08-01 1202.00 1924-09-01 1214.00 1924-10-01 1237.00 1924-11-01 1223.00 1924-12-01 1253.00 1925-01-01 1211.00 1925-02-01 1270.00 1925-03-01 1281.00 1925-04-01 1258.00 1925-05-01 1277.00 1925-06-01 1284.00 1925-07-01 1267.00 1925-08-01 1280.00 1925-09-01 1254.00 1925-10-01 1321.00 1925-11-01 1324.00 1925-12-01 1329.00 1926-01-01 1271.00 1926-02-01 1321.00 1926-03-01 1333.00 1926-04-01 1318.00 1926-05-01 1313.00 1926-06-01 1313.00 1926-07-01 1272.00 1926-08-01 1310.00 1926-09-01 1298.00 1926-10-01 1338.00 1926-11-01 1310.00 1926-12-01 1309.00 1927-01-01 1247.00 1927-02-01 1321.00 1927-03-01 1335.00 1927-04-01 1330.00 1927-05-01 1334.00 1927-06-01 1304.00 1927-07-01 1267.00 1927-08-01 1302.00 1927-09-01 1278.00 1927-10-01 1298.00 1927-11-01 1270.00 1927-12-01 1304.00 1928-01-01 1267.00 1928-02-01 1329.00 1928-03-01 1337.00 1928-04-01 1321.00 1928-05-01 1334.00 1928-06-01 1326.00 1928-07-01 1300.00 1928-08-01 1329.00 1928-09-01 1321.00 1928-10-01 1360.00 1928-11-01 1324.00 1928-12-01 1337.00