Rowland Hill has pointed out that from 1815 to 1835 the population had increased from 19,552,000 to 25,605,000 while the net revenue from the Post Office had remained practically stationary. He said nothing, however, about the industrial depression of the country during that period nor of the political and economic crisis through which England was passing. He referred to the great increase in the postal revenue of the United States during the same period; on the one hand, a nation with immense natural resources and a population doubling itself every generation, and on the other hand, a people inhabiting two small islands, making heroic efforts to recover from a most burdensome war. With the introduction of penny postage the gross revenue of the Post Office fell from £2,390,763 in 1840 to £1,359,466 in 1841, and did not fully recover from the decreased postage rates for twelve years. The cost of management, on the other hand, increased only from £756,999 in 1840 to £858,677 in 1841. But the financial loss is shown most plainly in the falling off in net revenue from £1,633,764 to £500,789. If we exclude packet expenses, and such was the practice until 1858, the net revenue did not again reach the maximum figure of high postage days until 1862. Including packet expenses we find that the net revenue did not fully recover until the early seventies. The average yearly gross revenue for the period from 1841-45 was £1,658,214, expenditure £1,001,405, and the net revenue £656,809. These all increased steadily and on the whole proportionately until 1860, the average yearly figures for the preceding five years being £3,135,587, £1,785,911, and £1,349,676. In 1858 the packet expenses are included under cost of management and their enormous increase from the beginning of the century sadly depleted the net revenue. It seems more advisable, however, not to include them until 1860 when the packets passed from the control of the Admiralty to that of the Post Office. The average gross revenue for the years 1861 to 1865 was £4,016,750, expenditure (including packets) £3,013,389, and net revenue £1,003,341. During the next quarter of a century these increased to £6,326,141, £4,019,423, and £2,306,718 respectively, exclusive of telegraph receipts and expenditures. For the five years ending 31st March, 1906, the average gross revenue was £15,926,905, expenditure £11,156,292, and net revenue £4,770,613.[730] [730] See Appendix, pp. 249, 250, 251, Table VI; p. 252, Table VII. CHAPTER IX THE QUESTION OF MONOPOLY