In his report of 1866, Browne estimated the total production of gold in California up to 1865 at about $900,000,000. The gold exportation from San Francisco during these years was as follows:1849, $4,921,250;1850, $27,676,346; 1851,$42,582,695;1852,$46,588,434;1853, $57,330,034;1854, $51,328,653; 1855,$45,182,631;1856,$48,880,543;1857, $48,976,697;1858, $47,548,025; 1859,$47,649,462;1860,$42,203,345;1861, $40,639,080;1862, $42,561,761; 1863,$46,071,920;1864, $55,707,201;1865, $44,984,546. Total, $740,832,623. To this he added $200,000,000, the amount carried away during this sixteen years unmanifested. Report Upon the Resources of the States and Territories West of the Rocky Mountains, H. Ex. Doc., 29, 39 Cong., 2 Sess., 50 (1289).
