The record, year by year

114 years hold two or more dossiers — 488 files dating their construction between 1540 and 1949. A year with a single file gets no page of its own; 2,962 dossiers carry no sourced year at all. For the wider view, seethe record by decade.

1540s2 files

1540 2

1630s2 files

1720s2 files

1750s2 files

1760s2 files

1770s2 files

1790s9 files

1800s4 files

1810s8 files

1820s12 files

1821 3 1822 2 1826 3 1827 2 1829 2

1830s23 files

1830 4 1832 2 1834 4 1835 2 1836 3 1837 4 1838 2 1839 2

1840s25 files

1840 2 1842 2 1845 6 1846 4 1847 4 1848 2 1849 5

1850s63 files

1850 3 1851 5 1852 5 1853 2 1854 5 1855 10 1856 9 1857 11 1858 7 1859 6

1860s33 files

1860 3 1861 4 1862 4 1863 5 1864 3 1865 2 1866 2 1867 2 1868 5 1869 3

1870s43 files

1870 2 1871 8 1872 3 1874 4 1875 5 1876 7 1877 2 1878 7 1879 5

1880s45 files

1880 7 1881 4 1882 2 1884 2 1885 8 1886 7 1887 3 1888 6 1889 6

1890s37 files

1890 5 1891 3 1892 11 1893 5 1894 3 1896 6 1898 4

1900s54 files

1900 6 1901 9 1902 7 1903 6 1904 3 1905 4 1906 3 1907 7 1908 5 1909 4

1910s37 files

1910 6 1911 8 1912 3 1913 7 1914 2 1915 6 1917 3 1919 2

1920s55 files

1922 3 1923 3 1924 5 1925 6 1926 11 1927 11 1928 7 1929 9

1930s15 files

1930 4 1932 2 1933 2 1934 2 1936 3 1937 2

1940s13 files

1941 2 1942 7 1943 2 1949 2

What a year page holds

Each page gathers the dossiers that date their construction or opening to that year — sourced dates, reported not asserted. The count beside a year is the file count, not a claim about how much was built; the archive only knows what the record kept.