Month	Percent
1947-11-01	1.83000
1947-12-01	1.92000
1948-01-01	1.86000
1948-02-01	1.66000
1948-03-01	1.73000
1948-04-01	1.51000
1948-05-01	1.44000
1948-06-01	1.42000
1948-07-01	1.35000
1948-08-01	1.35000
1948-09-01	1.20000
1948-10-01	1.42000
1948-11-01	1.62000
1948-12-01	1.50000
1949-01-01	1.66000
1949-02-01	1.89000
1949-03-01	1.78000
1949-04-01	1.64000
1949-05-01	1.51000
1949-06-01	1.52000
1949-07-01	1.58000
1949-08-01	1.58000
1949-09-01	1.44000
1949-10-01	1.58000
1949-11-01	1.65000
1949-12-01	1.56000
1950-01-01	1.30000
1950-02-01	1.63000
1950-03-01	1.31000
1950-04-01	1.40000
1950-05-01	1.44000
1950-06-01	1.09000
1950-07-01	1.20000
1950-08-01	1.18000
1950-09-01	1.14000
1950-10-01	1.26000
1950-11-01	1.25000
1950-12-01	1.24000
1951-01-01	1.20000
1951-02-01	1.19000
1951-03-01	1.17000
1951-04-01	0.990000
1951-05-01	0.990000
1951-06-01	0.960000
1951-07-01	1.26000
1951-08-01	1.35000
1951-09-01	1.04000
1951-10-01	1.16000
1951-11-01	1.14000
1951-12-01	1.27000
1952-01-01	0.810000
1952-02-01	0.790000
1952-03-01	0.860000
1952-04-01	0.870000
1952-05-01	0.930000
1952-06-01	0.850000
1952-07-01	0.870000
1952-08-01	0.860000
1952-09-01	0.850000
1952-10-01	0.890000
1952-11-01	0.860000
1952-12-01	0.930000
1953-01-01	0.890000
1953-02-01	0.910000
1953-03-01	0.860000
1953-04-01	0.770000
1953-05-01	0.800000
1953-06-01	0.780000
1953-07-01	0.890000
1953-08-01	0.890000
1953-09-01	0.960000
1953-10-01	0.950000
1953-11-01	1.03000
1953-12-01	1.04000
1954-01-01	1.15000
1954-02-01	1.16000
1954-03-01	1.01000
1954-04-01	0.930000
1954-05-01	0.960000
1954-06-01	0.940000
1954-07-01	0.940000
1954-08-01	0.910000
1954-09-01	0.960000
1954-10-01	0.960000
1954-11-01	0.920000
1954-12-01	0.880000
1955-01-01	0.870000
1955-02-01	0.870000
1955-03-01	0.760000
1955-04-01	0.750000
1955-05-01	0.720000
1955-06-01	0.680000
1955-07-01	0.720000
1955-08-01	0.670000
1955-09-01	0.670000
1955-10-01	0.690000
1955-11-01	0.690000
1955-12-01	0.800000
1956-01-01	0.730000
1956-02-01	0.710000
1956-03-01	0.700000
1956-04-01	0.700000
1956-05-01	0.670000
1956-06-01	0.690000
1956-07-01	0.690000
1956-08-01	0.690000
1956-09-01	0.690000
1956-10-01	0.620000
1956-11-01	0.670000
1956-12-01	0.720000
1957-01-01	0.660000
1957-02-01	0.710000
1957-03-01	0.670000
1957-04-01	0.650000
1957-05-01	0.630000
1957-06-01	0.650000
1957-07-01	0.700000
1957-08-01	0.640000
1957-09-01	0.740000
1957-10-01	0.660000
1957-11-01	0.710000
1957-12-01	0.790000
1958-01-01	0.730000
1958-02-01	0.800000
1958-03-01	0.800000
1958-04-01	0.770000
1958-05-01	0.770000
1958-06-01	0.810000
1958-07-01	0.760000
1958-08-01	0.770000
1958-09-01	0.740000
1958-10-01	0.670000
1958-11-01	0.750000
1958-12-01	0.780000
1959-01-01	0.740000
1959-02-01	0.760000
1959-03-01	0.710000
1959-04-01	0.640000
1959-05-01	0.660000
1959-06-01	0.650000
1959-07-01	0.630000
1959-08-01	0.640000
1959-09-01	0.740000
1959-10-01	0.750000
1959-11-01	0.760000
1959-12-01	0.830000
1960-01-01	0.840000
1960-02-01	0.860000
1960-03-01	0.780000
1960-04-01	0.750000
1960-05-01	0.800000
1960-06-01	0.760000
1960-07-01	0.850000
1960-08-01	0.840000
1960-09-01	0.900000
1960-10-01	0.910000
1960-11-01	0.940000
1960-12-01	1.04000
1961-01-01	1.01000
1961-02-01	1.10000
1961-03-01	0.980000
1961-04-01	0.990000
1961-05-01	0.890000
1961-06-01	0.850000
1961-07-01	0.960000
1961-08-01	0.930000
1961-09-01	0.970000
1961-10-01	0.890000
1961-11-01	0.920000
1961-12-01	1.00000
1962-01-01	0.950000
1962-02-01	0.980000
1962-03-01	0.870000
1962-04-01	0.850000
1962-05-01	0.840000
1962-06-01	0.800000
1962-07-01	0.810000
1962-08-01	0.790000
1962-09-01	0.830000
1962-10-01	0.840000
1962-11-01	0.840000
1962-12-01	0.910000
1963-01-01	0.840000
1963-02-01	0.910000
1963-03-01	0.880000
1963-04-01	0.800000
1963-05-01	0.720000
1963-06-01	0.830000
1963-07-01	0.840000
1963-08-01	0.830000
1963-09-01	0.910000
1963-10-01	0.800000
1963-11-01	0.910000
1963-12-01	1.01000
1964-01-01	0.890000
1964-02-01	0.910000
1964-03-01	0.830000
1964-04-01	0.760000
1964-05-01	0.780000
1964-06-01	0.800000
1964-07-01	0.810000
1964-08-01	0.830000
1964-09-01	0.860000
1964-10-01	0.830000
1964-12-01	0.940000
1965-02-01	1.18000
1965-04-01	0.880000
1965-06-01	0.890000
1965-08-01	1.00000
1965-10-01	1.02000
1965-12-01	1.12000
1966-02-01	1.16000
1966-04-01	1.00000
1966-06-01	0.990000
1966-08-01	1.05000