| Year | Population | Popn. per | | | | sq. km | |--------|-------------|-------------| | 1991 | 5,102,400 | 66 | | 1981 | 5,130,735 | 66 | | 1971 | 5,228,963 | 68 | | Year | Population | Popn. per | | | | sq. mile | |--------|-------------|-------------| | 1961 | 5,179,344 | 174 | | 1951 | 5,096,415 | 171 | | 1931 | 4,842,980 | 163 | | 1921 | 4,882,497 | 164 | | 1911 | 4,760,904 | 160 | | 1901 | 4,472,103 | 150 | | 1891 | 4,025,647 | 135 | | 1881 | 3,735,573 | 125 | | 1871 | 3,360,018 | 113 | | 1861 | 3,062,294 | 100 | | 1851 | 2,888,742 | 97 | | 1841 | 2,620,184 | 88 | | 1831 | 2,364,386 | 79 | | 1821 | 2,091,521 | 70 | | 1811 | 1,805,864 | 60 |