Month	Percent
1948-01-01	2.97000
1948-02-01	2.85000
1948-03-01	2.99000
1948-04-01	2.81000
1948-05-01	2.86000
1948-06-01	2.93000
1948-07-01	2.80000
1948-08-01	2.83000
1948-09-01	2.86000
1948-10-01	2.99000
1948-11-01	2.96000
1948-12-01	3.15000
1949-01-01	2.66000
1949-02-01	2.77000
1949-03-01	2.75000
1949-04-01	2.74000
1949-05-01	2.69000
1949-06-01	2.77000
1949-07-01	2.68000
1949-08-01	2.60000
1949-09-01	2.40000
1949-10-01	2.50000
1949-11-01	2.54000
1949-12-01	2.53000
1950-01-01	2.60000
1950-02-01	2.58000
1950-03-01	2.57000
1950-04-01	2.40000
1950-05-01	2.58000
1950-06-01	2.63000
1950-07-01	2.55000
1950-08-01	2.61000
1950-09-01	2.70000
1950-10-01	2.64000
1950-11-01	2.63000
1950-12-01	2.75000
1951-01-01	2.74000
1951-02-01	2.78000
1951-03-01	2.90000
1951-04-01	3.06000
1951-05-01	2.98000
1951-06-01	3.24000
1951-07-01	3.20000
1951-08-01	3.01000
1951-09-01	2.91000
1951-10-01	3.09000
1951-11-01	3.36000
1951-12-01	3.22000
1952-01-01	3.08000
1952-02-01	2.94000
1952-03-01	3.14000
1952-04-01	3.09000
1952-05-01	3.25000
1952-06-01	3.09000
1952-07-01	3.11000
1952-08-01	3.08000
1952-09-01	3.14000
1952-10-01	3.16000
1952-11-01	3.07000
1952-12-01	3.04000
1953-01-01	3.17000
1953-02-01	3.26000
1953-03-01	3.41000
1953-04-01	3.53000
1953-05-01	3.80000
1953-06-01	3.82000
1953-07-01	3.59000
1953-08-01	3.46000
1953-09-01	3.60000
1953-10-01	3.09000
1953-11-01	3.13000
1953-12-01	3.23000
1954-01-01	3.00000
1954-02-01	2.88000
1954-03-01	2.74000
1954-04-01	2.88000
1954-05-01	2.90000
1954-06-01	2.91000
1954-07-01	2.94000
1954-08-01	2.94000
1954-09-01	3.01000
1954-10-01	2.84000
1954-11-01	2.94000
1954-12-01	2.87000
1955-01-01	2.99000
1955-02-01	3.09000
1955-03-01	3.14000
1955-04-01	3.11000
1955-05-01	3.15000
1955-06-01	3.11000
1955-07-01	3.14000
1955-08-01	3.41000
1955-09-01	3.27000
1955-10-01	3.15000
1955-11-01	3.17000
1955-12-01	3.27000
1956-01-01	3.20000
1956-02-01	3.07000
1956-03-01	3.25000
1956-04-01	3.55000
1956-05-01	3.48000
1956-06-01	3.56000
1956-07-01	3.56000
1956-08-01	4.02000
1956-09-01	3.96000
1956-10-01	3.94000
1956-11-01	4.29000
1956-12-01	4.26000
1957-01-01	4.28000
1957-02-01	4.13000
1957-03-01	4.18000
1957-04-01	4.23000
1957-05-01	4.41000
1957-06-01	4.81000
1957-07-01	4.59000
1957-08-01	4.78000
1957-09-01	4.68000
1957-10-01	4.71000
1957-11-01	4.56000
1957-12-01	4.04000
1958-01-01	3.62000
1958-02-01	3.73000
1958-03-01	3.88000
1958-04-01	3.67000
1958-05-01	3.66000
1958-06-01	3.61000
1958-07-01	3.85000
1958-08-01	4.39000
1958-09-01	4.56000
1958-10-01	4.48000
1958-11-01	4.35000
1958-12-01	4.44000
1959-01-01	4.36000
1959-02-01	4.29000
1959-03-01	4.30000
1959-04-01	4.53000
1959-05-01	4.81000
1959-06-01	4.82000
1959-07-01	4.80000
1959-08-01	4.74000
1959-09-01	5.29000
1959-10-01	5.10000
1959-11-01	5.07000
1959-12-01	5.16000
1960-01-01	4.95000
1960-02-01	4.96000
1960-03-01	4.66000
1960-04-01	4.78000
1960-05-01	4.86000
1960-06-01	4.69000
1960-07-01	4.49000
1960-08-01	4.37000
1960-09-01	4.45000
1960-10-01	4.60000
1960-11-01	4.59000
1960-12-01	4.79000
1961-01-01	4.35000
1961-02-01	4.31000
1961-03-01	4.26000
1961-04-01	4.42000
1961-05-01	4.51000
1961-06-01	4.65000
1961-07-01	4.62000
1961-08-01	4.59000
1961-09-01	4.38000
1961-10-01	4.26000
1961-11-01	4.32000
1961-12-01	4.39000