Shadowstats.com is a website dedicated to providing accurate data related to publically released government data. Over recent years, many metrics such as the consumer price index (CPI) and unemployment have had there definitions and formulas changed. This presents a great challenge when analyzing data on a historical basis. It's no longer "apples to apples". Often we like to compare a current cycle with one in the past. For instance, in the past two years, many have made comparisons to the Great Depression. If these metrics are not calculated the same way, then the comparisons are worthless.
Below are two graphs created by Shadowstats. Note the difference between accuracy and what is reported by the government and the media.
|Note that real unemployment is much worse than being reported.|
|Note that the CPI formula was changed during Clinton's term.|
As I always say, do your own research.