Year Total (000s) % Under 5 Years % 5-19 Years % 20-44 Years % 45-64 Years % 65+ Years 1851 2346 18.51 37.81 31.65 9.4 2.67 1861 3230 16.81 37.21 32.66 10.15 3.03 1871 3689 14.67 38.03 32.28 11.14 3.66 1881 4325 13.85 36.02 33.94 12.14 4.12 1891 4833 12.64 34.49 35.4 12.91 4.55 1901 5371 12.03 32.73 36.19 14 5.05 1911 7207 12.35 30.15 38.81 14.06 4.66 1921 8788 12.05 31.51 36.63 15.02 4.78 1931 10377 10.36 31.29 36.07 16.74 5.55 1941 11507 9.14 28.39 37.19 18.61 6.67 1951 14009 12.29 25.6 36.63 17.74 7.75 1961 18238 12.37 29.44 33.19 17.37 7.63 1971 21568 8.42 30.97 33.87 18.66 8.09 1981 24343 7.32 24.7 39.14 19.13 9.7 1991 27297 6.99 20.42 41.33 19.66 11.61 1996 28847 6.65 20.6 39.03 21.49 12.23 1998 30300 6.26 20.26 38.97 22.18 12.33