Federalregister.gov makes it easy to look at the last few administrations, with bulk downloads of executive orders from 1994 in different formats.
This table shows tallies of the number of executive orders per year since 1994:
So far, President Trump has issued 15 executive orders. President Obama issued 37 in his first year in office and President George W. Bush issued 51. Clinton, Bush, and Obama each issued just a handful (7, 3, and 7, respectively) in their last years in office.
To learn more about executive orders, see the Useful Reference section of our Presidential Power guide.