In an unusual move, President Donald Trump posted a graph Thursday night on social media that reflected jobs data from December that weren’t supposed to be released until the Labor Department issued the monthly employment report Friday morning at 8:30 a.m. eastern. The monthly jobs numbers are a closely guarded secret because they can cause sharp swings in financial markets when released. Friday’s report, in fact, contributed to a rise in stock prices and a slight decline in bond yields. Early copies of the report are kept under lock and key at the Bureau of Labor Statistics, which compiles the data.