Month	Ratio
1947-01-01	0.129000
1947-02-01	0.124000
1947-03-01	0.136000
1947-04-01	0.137000
1947-05-01	0.170000
1947-06-01	0.111000
1947-07-01	0.115000
1947-08-01	0.166000
1947-09-01	0.202000
1947-10-01	0.209000
1947-11-01	0.174000
1947-12-01	0.135000
1948-01-01	0.980000E-01
1948-02-01	0.790000E-01
1948-03-01	0.890000E-01
1948-04-01	0.116000
1948-05-01	0.146000
1948-06-01	0.108000
1948-07-01	0.112000
1948-08-01	0.136000
1948-09-01	0.154000
1948-10-01	0.152000
1948-11-01	0.960000E-01
1948-12-01	0.610000E-01
1949-01-01	0.410000E-01
1949-02-01	0.330000E-01
1949-03-01	0.360000E-01
1949-04-01	0.420000E-01
1949-05-01	0.420000E-01
1949-06-01	0.310000E-01
1949-07-01	0.290000E-01
1949-08-01	0.370000E-01
1949-09-01	0.390000E-01
1949-10-01	0.290000E-01
1949-11-01	0.270000E-01
1949-12-01	0.220000E-01
1950-01-01	0.190000E-01
1950-02-01	0.200000E-01
1950-03-01	0.260000E-01
1950-04-01	0.350000E-01
1950-05-01	0.470000E-01
1950-06-01	0.420000E-01
1950-07-01	0.570000E-01
1950-08-01	0.108000
1950-09-01	0.106000
1950-10-01	0.118000
1950-11-01	0.870000E-01
1950-12-01	0.760000E-01
1951-01-01	0.810000E-01
1951-02-01	0.940000E-01
1951-03-01	0.119000
1951-04-01	0.158000
1951-05-01	0.195000
1951-06-01	0.138000
1951-07-01	0.144000
1951-08-01	0.186000
1951-09-01	0.182000
1951-10-01	0.171000
1951-11-01	0.133000
1951-12-01	0.127000
1952-01-01	0.101000
1952-02-01	0.100000
1952-03-01	0.124000
1952-04-01	0.158000
1952-05-01	0.178000
1952-06-01	0.135000
1952-07-01	0.134000
1952-08-01	0.175000
1952-09-01	0.215000
1952-10-01	0.228000
1952-11-01	0.186000
1952-12-01	0.157000
1953-01-01	0.112000
1953-02-01	0.127000
1953-03-01	0.151000
1953-04-01	0.173000
1953-05-01	0.215000
1953-06-01	0.162000
1953-07-01	0.155000
1953-08-01	0.188000
1953-09-01	0.162000
1953-10-01	0.132000
1953-11-01	0.880000E-01
1953-12-01	0.510000E-01
1954-01-01	0.350000E-01
1954-02-01	0.320000E-01
1954-03-01	0.340000E-01
1954-04-01	0.390000E-01
1954-05-01	0.430000E-01
1954-06-01	0.390000E-01
1954-07-01	0.410000E-01
1954-08-01	0.470000E-01
1954-09-01	0.460000E-01
1954-10-01	0.490000E-01
1954-11-01	0.460000E-01
1954-12-01	0.420000E-01
1955-01-01	0.350000E-01
1955-02-01	0.390000E-01
1955-03-01	0.470000E-01
1955-04-01	0.590000E-01
1955-05-01	0.810000E-01
1955-06-01	0.670000E-01
1955-07-01	0.770000E-01
1955-08-01	0.100000
1955-09-01	0.109000
1955-10-01	0.106000
1955-11-01	0.880000E-01
1955-12-01	0.720000E-01
1956-01-01	0.640000E-01
1956-02-01	0.630000E-01
1956-03-01	0.690000E-01
1956-04-01	0.900000E-01
1956-05-01	0.990000E-01
1956-06-01	0.800000E-01
1956-07-01	0.840000E-01
1956-08-01	0.118000
1956-09-01	0.127000
1956-10-01	0.132000
1956-11-01	0.930000E-01
1956-12-01	0.770000E-01
1957-01-01	0.660000E-01
1957-02-01	0.660000E-01
1957-03-01	0.750000E-01
1957-04-01	0.900000E-01
1957-05-01	0.950000E-01
1957-06-01	0.710000E-01
1957-07-01	0.770000E-01
1957-08-01	0.910000E-01
1957-09-01	0.850000E-01
1957-10-01	0.730000E-01
1957-11-01	0.500000E-01
1957-12-01	0.360000E-01
1958-01-01	0.270000E-01
1958-02-01	0.230000E-01
1958-03-01	0.240000E-01
1958-04-01	0.290000E-01
1958-05-01	0.340000E-01
1958-06-01	0.290000E-01
1958-07-01	0.320000E-01
1958-08-01	0.400000E-01
1958-09-01	0.410000E-01
1958-10-01	0.430000E-01
1958-11-01	0.430000E-01
1958-12-01	0.340000E-01
1959-01-01	0.310000E-01
1959-02-01	0.320000E-01
1959-03-01	0.410000E-01
1959-04-01	0.580000E-01
1959-05-01	0.720000E-01
1959-06-01	0.570000E-01
1959-07-01	0.600000E-01
1959-08-01	0.730000E-01
1959-09-01	0.740000E-01
1959-10-01	0.650000E-01
1959-11-01	0.550000E-01
1959-12-01	0.490000E-01
1960-01-01	0.420000E-01
1960-02-01	0.450000E-01
1960-03-01	0.460000E-01
1960-04-01	0.590000E-01
1960-05-01	0.670000E-01
1960-06-01	0.470000E-01
1960-07-01	0.500000E-01
1960-08-01	0.560000E-01
1960-09-01	0.560000E-01
1960-10-01	0.490000E-01
1960-11-01	0.410000E-01
1960-12-01	0.320000E-01
1961-01-01	0.250000E-01
1961-02-01	0.250000E-01
1961-03-01	0.300000E-01
1961-04-01	0.360000E-01
1961-05-01	0.440000E-01
1961-06-01	0.360000E-01
1961-07-01	0.400000E-01
1961-08-01	0.500000E-01
1961-09-01	0.540000E-01
1961-10-01	0.540000E-01
1961-11-01	0.510000E-01
1961-12-01	0.450000E-01
1962-01-01	0.390000E-01
1962-02-01	0.420000E-01
1962-03-01	0.500000E-01
1962-04-01	0.660000E-01
1962-05-01	0.790000E-01
1962-06-01	0.580000E-01
1962-07-01	0.630000E-01
1962-08-01	0.670000E-01
1962-09-01	0.700000E-01
1962-10-01	0.690000E-01
1962-11-01	0.530000E-01
1962-12-01	0.460000E-01
1963-01-01	0.380000E-01
1963-02-01	0.380000E-01
1963-03-01	0.460000E-01
1963-04-01	0.580000E-01
1963-05-01	0.640000E-01
1963-06-01	0.510000E-01
1963-07-01	0.560000E-01
1963-08-01	0.670000E-01
1963-09-01	0.690000E-01
1963-10-01	0.650000E-01
1963-11-01	0.540000E-01
1963-12-01	0.480000E-01
1964-01-01	0.430000E-01
1964-02-01	0.440000E-01
1964-03-01	0.520000E-01
1964-04-01	0.660000E-01
1964-05-01	0.810000E-01
1964-06-01	0.570000E-01
1964-07-01	0.670000E-01
1964-08-01	0.760000E-01
1964-09-01	0.820000E-01
1964-10-01	0.810000E-01
1964-11-01	0.740000E-01
1964-12-01	0.600000E-01
1965-01-01	0.560000E-01
1965-02-01	0.540000E-01
1965-03-01	0.690000E-01
1965-04-01	0.860000E-01
1965-05-01	0.106000
1965-06-01	0.740000E-01
1965-07-01	0.880000E-01
1965-08-01	0.112000
1965-09-01	0.129000
1965-10-01	0.132000
1965-11-01	0.116000
1965-12-01	0.108000
1966-01-01	0.100000
1966-02-01	0.111000
1966-03-01	0.136000
1966-04-01	0.172000
1966-05-01	0.183000
1966-06-01	0.122000
1966-07-01	0.141000
1966-08-01	0.169000
1966-09-01	0.193000
1966-10-01	0.181000
1966-11-01	0.152000
1966-12-01	0.122000
1967-01-01	0.104000
1967-02-01	0.101000
1967-03-01	0.117000
1967-04-01	0.144000
1967-05-01	0.171000
1967-06-01	0.100000
1967-07-01	0.106000
1967-08-01	0.134000