1901/06/15	1424.0
1902/06/15	1425.8
1903/06/15	1424.8
1904/06/15	1425.0
1905/06/15	1425.2
1906/06/15	1424.6
1907/06/15	1424.2
1908/06/15	1423.4
1909/06/15	1422.6
1910/06/15	1421.4
1911/06/15	1420.4
1912/06/15	1421.4
1913/06/15	1421.8
1914/06/15	1420.6
1915/06/15	1419.2
1916/06/15	1419.6
1917/06/15	1418.8
1918/06/15	1417.4
1919/06/15	1418.0
1920/06/15	1417.6
1921/06/15	1416.7
1922/06/15	1417.2
1923/06/15	1416.3
1924/06/15	1416.2
1925/06/15	1414.8
1926/06/15	1413.7
1927/06/15	1413.6
1928/06/15	1412.8
1929/06/15	1412.2
1930/06/15	1411.4
1931/01/30	1411.66