Quarter	Percentage
1946-01-01	0.110000
1946-04-01	0.100000
1946-07-01	0.110000
1946-10-01	0.280000
1947-01-01	0.360000
1947-04-01	0.420000
1947-07-01	0.350000
1947-10-01	0.450000
1948-01-01	0.380000
1948-04-01	0.280000
1948-07-01	0.360000
1948-10-01	0.520000
1949-01-01	0.570000
1949-04-01	0.580000
1949-07-01	0.500000
1949-10-01	0.450000
1950-01-01	0.530000
1950-04-01	0.410000
1950-07-01	0.320000
1950-10-01	0.300000
1951-01-01	0.270000
1951-04-01	0.300000
1951-07-01	0.340000
1951-10-01	0.290000
1952-01-01	0.320000
1952-04-01	0.320000
1952-07-01	0.250000
1952-10-01	0.320000
1953-01-01	0.350000
1953-04-01	0.400000
1953-07-01	0.420000
1953-10-01	0.480000
1954-01-01	0.580000
1954-04-01	0.540000
1954-07-01	0.430000
1954-10-01	0.420000
1955-01-01	0.480000
1955-04-01	0.420000
1955-07-01	0.360000
1955-10-01	0.400000
1956-01-01	0.460000
1956-04-01	0.490000
1956-07-01	0.460000
1956-10-01	0.430000
1957-01-01	0.540000
1957-04-01	0.500000
1957-07-01	0.400000
1957-10-01	0.440000
1958-01-01	0.640000
1958-04-01	0.640000
1958-07-01	0.500000
1958-10-01	0.470000
1959-01-01	0.570000
1959-04-01	0.480000
1959-07-01	0.430000
1959-10-01	0.430000
1960-01-01	0.480000
1960-04-01	0.690000
1960-07-01	0.600000
1960-10-01	0.610000
1961-01-01	0.750000
1961-04-01	0.630000
1961-07-01	0.700000
1961-10-01	0.600000