rownames,time,value
1,1875,580.38
2,1876,581.86
3,1877,580.97
4,1878,580.8
5,1879,579.79
6,1880,580.39
7,1881,580.42
8,1882,580.82
9,1883,581.4
10,1884,581.32
11,1885,581.44
12,1886,581.68
13,1887,581.17
14,1888,580.53
15,1889,580.01
16,1890,579.91
17,1891,579.14
18,1892,579.16
19,1893,579.55
20,1894,579.67
21,1895,578.44
22,1896,578.24
23,1897,579.1
24,1898,579.09
25,1899,579.35
26,1900,578.82
27,1901,579.32
28,1902,579.01
29,1903,579
30,1904,579.8
31,1905,579.83
32,1906,579.72
33,1907,579.89
34,1908,580.01
35,1909,579.37
36,1910,578.69
37,1911,578.19
38,1912,578.67
39,1913,579.55
40,1914,578.92
41,1915,578.09
42,1916,579.37
43,1917,580.13
44,1918,580.14
45,1919,579.51
46,1920,579.24
47,1921,578.66
48,1922,578.86
49,1923,578.05
50,1924,577.79
51,1925,576.75
52,1926,576.75
53,1927,577.82
54,1928,578.64
55,1929,580.58
56,1930,579.48
57,1931,577.38
58,1932,576.9
59,1933,576.94
60,1934,576.24
61,1935,576.84
62,1936,576.85
63,1937,576.9
64,1938,577.79
65,1939,578.18
66,1940,577.51
67,1941,577.23
68,1942,578.42
69,1943,579.61
70,1944,579.05
71,1945,579.26
72,1946,579.22
73,1947,579.38
74,1948,579.1
75,1949,577.95
76,1950,578.12
77,1951,579.75
78,1952,580.85
79,1953,580.41
80,1954,579.96
81,1955,579.61
82,1956,578.76
83,1957,578.18
84,1958,577.21
85,1959,577.13
86,1960,579.1
87,1961,578.25
88,1962,577.91
89,1963,576.89
90,1964,575.96
91,1965,576.8
92,1966,577.68
93,1967,578.38
94,1968,578.52
95,1969,579.74
96,1970,579.31
97,1971,579.89
98,1972,579.96