Month	Percent
1959-01-01	4.58000
1959-02-01	4.60000
1959-03-01	4.53000
1959-04-01	4.60000
1959-05-01	4.92000
1959-06-01	5.00000
1959-07-01	4.95000
1959-08-01	4.90000
1959-09-01	5.28000
1959-10-01	5.37000
1959-11-01	5.14000
1959-12-01	5.27000
1960-01-01	5.34000
1960-02-01	5.24000
1960-03-01	4.98000
1960-04-01	4.97000
1960-05-01	4.95000
1960-06-01	4.91000
1960-07-01	4.79000
1960-08-01	4.65000
1960-09-01	4.64000
1960-10-01	4.75000
1960-11-01	4.82000
1960-12-01	4.94000
1961-01-01	4.63000
1961-02-01	4.43000
1961-03-01	4.37000
1961-04-01	4.57000
1961-05-01	4.67000
1961-06-01	4.82000
1961-07-01	4.81000
1961-08-01	4.79000
1961-09-01	4.72000
1961-10-01	4.60000
1961-11-01	4.52000
1961-12-01	4.58000
1962-01-01	4.56000
1962-02-01	4.53000
1962-03-01	4.41000
1962-04-01	4.37000
1962-05-01	4.32000
1962-06-01	4.30000
1962-07-01	4.41000
1962-08-01	4.39000
1962-09-01	4.28000
1962-10-01	4.26000
1962-11-01	4.23000
1962-12-01	4.28000
1963-01-01	4.22000
1963-02-01	4.25000
1963-03-01	4.28000
1963-04-01	4.35000
1963-05-01	4.36000
1963-06-01	4.32000
1963-07-01	4.34000
1963-08-01	4.34000
1963-09-01	4.40000
1963-10-01	4.37000
1963-11-01	4.42000
1963-12-01	4.49000
1964-01-01	4.50000
1964-02-01	4.39000
1964-03-01	4.45000
1964-04-01	4.48000
1964-05-01	4.48000
1964-06-01	4.50000
1964-07-01	4.44000
1964-08-01	4.44000
1964-09-01	4.49000
1964-10-01	4.49000
1964-11-01	4.48000
1964-12-01	4.49000
1965-01-01	4.45000
1965-02-01	4.45000
1965-03-01	4.49000
1965-04-01	4.48000
1965-05-01	4.52000
1965-06-01	4.57000
1965-07-01	4.57000
1965-08-01	4.66000
1965-09-01	4.71000
1965-10-01	4.70000
1965-11-01	4.75000
1965-12-01	4.92000
1966-01-01	4.93000
1966-02-01	5.09000
1966-03-01	5.33000
1966-04-01	5.38000
1966-05-01	5.55000
1966-06-01	5.67000
1966-07-01	5.81000
1966-08-01	6.04000
1966-09-01	6.14000
1966-10-01	6.04000
1966-11-01	6.11000
1966-12-01	5.98000
1967-01-01	5.53000
1967-02-01	5.35000
1967-03-01	5.55000
1967-04-01	5.59000
1967-05-01	5.90000
1967-06-01	6.06000
1967-07-01	6.06000
1967-08-01	6.30000
1967-09-01	6.33000
1967-10-01	6.53000
1967-11-01	6.87000
1967-12-01	6.93000
1968-01-01	6.57000
1968-02-01	6.57000
1968-03-01	6.80000
1968-04-01	6.79000