"Failure rates, however, increased for free-standing executive agencies, within and outside the Executive Office of the President, and for national councils. More surprisingly, confirmation delays for agency nominations increased across the board. For those successful 2013 nominations (a few of which were actually confirmed in December after the change), they took 95 days, on average. In 2014, delays ballooned to 150 days. Indeed, it was the biggest jump in any given year in an administration between any two presidents."
"Interestingly, President Obama submitted fewer nominations (2828) than any of the other two-term presidents. President George W. Bush submitted the highest (3459); Presidents Reagan and Clinton each submitted around 3000 (2929 and 3014, respectively).... President Obama submitted fewer nominations than his predecessors, allowing acting officials to fill in for many important positions. President Trump could follow suit."