Still, "within a percent" is misleading in this context. The number is within one percentage point, however, the entire range of the dataset since 1970 has been

Still, "within a percent" is misleading in this context. The number is within one percentage point, however, the entire range of the dataset since 1970 has been within 60 to 67%. Therefore, "a percent" difference is 14% of the range. For 2 decades between 1988 and 2008 the entire range was steady between 65.8 and 67.2 or so. The ensuing "great recession" only dropped the rate by about 3 percentage points. https://fred.stlouisfed.org/series/CIVPART https://fred.stlouisfed.org/series/CIVPART The difference between a reliable cloud service with 99.9% uptime and one with 99% uptime is also "within a percent" -- but the less reliable service has 10x more interruptions.