Unemployment 50 years ago today was 5.5%.

Details on how unemployment rates are calculated can be found at the Fed. Reserve  of St. Louis’ website. (http://research.stlouisfed.org/fred2/data/UNRATE.txt)

Source:              U.S. Department of Labor: Bureau of Labor Statistics
Release:             Employment Situation
Seasonal Adjustment: Seasonally Adjusted
Frequency:           Monthly
Units:               Percent
Date Range:          1948-01-01 to 2013-08-01
Last Updated:        2013-09-06 9:06 AM CDT
Notes:               The unemployment rate represents the number of unemployed as a
                     percentage of the labor force. Labor force data are restricted to
                     people 16 years of age and older, who currently reside in 1 of the 50
                     states or the District of Columbia, who do not reside in institutions
                     (e.g., penal and mental facilities, homes for the aged), and who are
                     not on active duty in the Armed Forces.

                     This rate is also defined as the U-3 measure of labor