Quarter	Not Specified
1908-01-01	56.1
1908-04-01	86.4
1908-07-01	84.5
1908-10-01	79.1
1909-01-01	93.3
1909-04-01	93.1
1909-07-01	94.9
1909-10-01	87.4
1910-01-01	91.3
1910-04-01	82.1
1910-07-01	92.5
1910-10-01	91.4
1911-01-01	90.3
1911-04-01	78.7
1911-07-01	88.1
1911-10-01	92.5
1912-01-01	70.9
1912-04-01	97.6
1912-07-01	94.7
1912-10-01	87.1
1913-01-01	85.3
1913-04-01	87.2
1913-07-01	87.0
1913-10-01	94.1
1914-01-01	94.9
1914-04-01	93.6
1914-07-01	88.4
1914-10-01	78.8
1915-01-01	89.9
1915-04-01	93.1
1915-07-01	96.4
1915-10-01	96.0
1916-01-01	95.7
1916-04-01	96.9
1916-07-01	97.8
1916-10-01	96.5
1917-01-01	95.5
1917-04-01	95.8
1917-07-01	96.2
1917-10-01	96.9
1918-01-01	97.1
1918-04-01	98.2
1918-07-01	93.3
1918-10-01	90.8
1919-01-01	78.9
1919-04-01	97.3
1919-07-01	97.2
1919-10-01	97.0
1920-01-01	88.1
1920-04-01	80.2
1920-07-01	73.7
1920-10-01	41.8
1921-01-01	62.6
1921-04-01	68.0
1921-07-01	85.6
1921-10-01	87.9
1922-01-01	42.1
1922-04-01	57.8
1922-07-01	93.2
1922-10-01	95.6
1923-01-01	98.3
1923-04-01	95.7
1923-07-01	93.7
1923-10-01	78.0