,pig iron made,proportion used in forges 1788,,70.2% 1789,, 1790,, 1791,, 1792,, 1793,, 1794,, 1795,, 1796,, 1797,, 1798,, 1799,, 1800,, 1801,, 1802,, 1803,, 1804,, 1805,,60.0% 1806,, 1807,, 1808,, 1809,, 1810,, 1811,, 1812,, 1813,, 1814,, 1815,, 1816,, 1817,, 1818,, 1819 1820 1821 1822 1823 1824 1825 1826 1827 1828 1829 1830 1831 1832 1833 1834 1835 1836 1837 1838 1839 1840 1841 1842 1843