"Year"	"Value"
1855	95.7
1856	115.8
1857	122
1858	116.6
1859	130.4
1860	135.9
1861	125.1
1862	124
1863	146.5
1864	160.4
1865	165.8
1866	188.9
1867	181
1868	179.7
1869	190
1870	199.6
1871	223.1
1872	256.3
1873	255.2
1874	239.6
1875	223.5
1876	200.6
1877	198.9
1878	192.8
1879	191.5
1880	223.1
1881	234
1882	241.5
1883	239.8
1884	233
1885	213.1
1886	212.7
1887	221.9
1888	234.5
1889	248.9
1890	263.5
1891	247.2
1892	227.1
1893	218.1
1894	215.8
1895	225.9
1896	240.1
1897	234.3
1898	233.4
1899	255.4