Month	Percent
1949-01-01	4.35000
1949-02-01	4.35000
1949-03-01	4.35000
1949-04-01	4.35000
1949-05-01	4.34000
1949-06-01	4.35000
1949-07-01	4.34000
1949-08-01	4.34000
1949-09-01	4.32000
1949-10-01	4.32000
1949-11-01	4.32000
1949-12-01	4.32000
1950-01-01	4.31000
1950-02-01	4.31000
1950-03-01	4.30000
1950-04-01	4.23000
1950-05-01	4.16000
1950-06-01	4.09000
1950-07-01	4.08000
1950-08-01	4.08000
1950-09-01	4.08000
1950-10-01	4.08000
1950-11-01	4.08000
1950-12-01	4.08000
1951-01-01	4.08000
1951-02-01	4.08000
1951-03-01	4.12000
1951-04-01	4.19000
1951-05-01	4.27000
1951-06-01	4.29000
1951-07-01	4.31000
1951-08-01	4.31000
1951-09-01	4.30000
1951-10-01	4.27000
1951-11-01	4.27000
1951-12-01	4.26000
1952-01-01	4.26000
1952-02-01	4.27000
1952-03-01	4.29000
1952-04-01	4.29000
1952-05-01	4.29000
1952-06-01	4.30000
1952-07-01	4.30000
1952-08-01	4.30000
1952-09-01	4.30000
1952-10-01	4.31000
1952-11-01	4.32000
1952-12-01	4.32000
1953-01-01	4.34000
1953-02-01	4.34000
1953-03-01	4.34000
1953-04-01	4.45000
1953-05-01	4.56000
1953-06-01	4.67000
1953-07-01	4.74000
1953-08-01	4.82000
1953-09-01	4.86000
1953-10-01	4.82000
1953-11-01	4.81000
1953-12-01	4.78000
1954-01-01	4.75000
1954-02-01	4.69000
1954-03-01	4.64000
1954-04-01	4.62000
1954-05-01	4.59000
1954-06-01	4.57000
1954-07-01	4.56000
1954-08-01	4.56000
1954-09-01	4.56000
1954-10-01	4.56000
1954-11-01	4.56000
1954-12-01	4.56000
1955-01-01	4.56000
1955-02-01	4.56000
1955-03-01	4.59000
1955-04-01	4.60000
1955-05-01	4.63000
1955-06-01	4.63000
1955-07-01	4.64000
1955-08-01	4.67000
1955-09-01	4.70000
1955-10-01	4.73000
1955-11-01	4.75000
1955-12-01	4.73000
1956-01-01	4.73000
1956-02-01	4.70000
1956-03-01	4.68000
1956-04-01	4.71000
1956-05-01	4.78000
1956-06-01	4.81000
1956-07-01	4.81000
1956-08-01	4.87000
1956-09-01	4.92000
1956-10-01	4.95000
1956-11-01	5.05000
1956-12-01	5.15000
1957-01-01	5.25000
1957-02-01	5.36000
1957-03-01	5.35000
1957-04-01	5.35000
1957-05-01	5.32000
1957-06-01	5.35000
1957-07-01	5.38000
1957-08-01	5.46000
1957-09-01	5.54000
1957-10-01	5.63000
1957-11-01	5.63000
1957-12-01	5.61000
1958-01-01	5.58000
1958-02-01	5.56000
1958-03-01	5.51000
1958-04-01	5.43000
1958-05-01	5.39000
1958-06-01	5.37000
1958-07-01	5.35000
1958-08-01	5.37000
1958-09-01	5.50000
1958-10-01	5.57000
1958-11-01	5.60000
1958-12-01	5.60000
1959-01-01	5.60000
1959-02-01	5.58000
1959-03-01	5.57000
1959-04-01	5.58000
1959-05-01	5.64000
1959-06-01	5.71000
1959-07-01	5.75000
1959-08-01	5.80000
1959-09-01	5.94000
1959-10-01	6.08000
1959-11-01	6.23000
1959-12-01	6.23000
1960-01-01	6.24000
1960-02-01	6.23000
1960-03-01	6.22000
1960-04-01	6.21000
1960-05-01	6.21000
1960-06-01	6.19000
1960-07-01	6.18000
1960-08-01	6.14000
1960-09-01	6.11000
1960-10-01	6.09000
1960-11-01	6.05000
1960-12-01	6.04000
1961-01-01	6.00000
1961-02-01	5.89000
1961-03-01	5.82000
1961-04-01	5.77000
1961-05-01	5.74000
1961-06-01	5.72000
1961-07-01	5.68000
1961-08-01	5.68000
1961-09-01	5.69000
1961-10-01	5.70000
1961-11-01	5.70000
1961-12-01	5.69000
1962-01-01	5.69000
1962-02-01	5.68000
1962-03-01	5.65000
1962-04-01	5.64000
1962-05-01	5.60000
1962-06-01	5.59000
1962-07-01	5.58000
1962-08-01	5.57000
1962-09-01	5.56000
1962-10-01	5.55000
1962-11-01	5.54000
1962-12-01	5.53000
1963-01-01	5.52000
1963-02-01	5.48000
1963-03-01	5.47000
1963-04-01	5.46000
1963-05-01	5.45000
1963-06-01	5.45000
1963-07-01	5.45000
1963-08-01	5.45000
1963-09-01	5.45000
1963-10-01	5.45000
1963-11-01	5.45000
1963-12-01	5.45000
1964-01-01	5.45000
1964-02-01	5.45000
1964-03-01	5.45000
1964-04-01	5.45000
1964-05-01	5.45000
1964-06-01	5.45000
1964-07-01	5.46000
1964-08-01	5.46000
1964-09-01	5.46000
1964-10-01	5.45000
1964-11-01	5.45000
1964-12-01	5.45000
1965-01-01	5.45000
1965-02-01	5.45000
1965-03-01	5.45000
1965-04-01	5.45000
1965-05-01	5.45000
1965-06-01	5.44000
1965-07-01	5.44000
1965-08-01	5.45000
1965-09-01	5.46000
1965-10-01	5.49000
1965-11-01	5.51000
1965-12-01	5.62000