According to Professor King's computations, the total rent of land in the United States in 1910 was $2,673,900,000, while the total expenditures of national, state, county and city governments were $2,591,800,000.[100] In his opinion (p. 162) "the rent would have been barely sufficient to pay off the various governmental budgets as at present constituted, and with the growing concentration of activities in the hands of the government, it appears that rent will soon be a quantity far too small to meet the required changes. With increasing pressure on our natural resources, however, it is probable that the percentage of the total income paid for rent will gradually increase and, since this is true, the lag behind the growing governmental expenses will be considerably less than would otherwise be the case." A change in our fiscal system providing for the immediate derivation of all revenues from land taxes would, therefore, involve the confiscation of all rent, and the destruction of all private land values. Land would be worth nothing to the owners when its entire annual return was taken by the State in the guise of taxes. Even if the process of imposing the new taxes on land were extended over a long term of years the same result would be reached in the end; for whatever increase had taken place in the economic value of land during the process would in all probability have been neutralised by the increase in governmental expenditures. It is evident, therefore, that the proposal to put _all_ taxes on land must be rejected on grounds of both morals and expediency. Let us suppose that all national revenues continued, as now, to be raised from other sources than land, and that all state, county, and city revenues remained as they are, except those derived from the general property tax. This would mean that all the following taxes would be unchanged: all federal taxes, the taxes on licenses of all kinds, all taxes on business, incomes, and inheritances, and all special property taxes. If, then, the whole of the general property tax were concentrated on land; that is, if all the taxes on improvements and on all forms of personal property were legally shifted to land,--the entire revenue to be raised from land would in 1912 have amounted to $1,349,841,038.[101] This is slightly more than one-half of Professor King's estimate of the total rent for 1910, which was $2,673,900,000. But this figure equals four per cent. of the land values of the country; hence the concentration of the general property tax on land would mean a tax rate of two per cent. on the full value of the land. How much would this change increase the present rate of land taxes, and decrease existing land values? While no accurate and definite answer can be given to either of these questions, certain approximations can be attempted which should be of considerable service.