Government has grown and shrank (as a percentage of GDP) off and on since the end of WWII.
FDR/Truman - Grew government considerably.
Eisenhower - Shrunk government (not really that much though).
JFK/Johnson - Slight growth in government.
Nixon/Ford - Slight growth in government (just more than JFK/Johnson, though most of that grown was during Ford's years).
Carter - Growth in government.
Reagan - More or less flat.
Bush - Slight growth in gov't.
Clinton - Somewhat significant drop in gov't.
Bush Jr. - Flat, up until his last few years, with significant growth.
Obama - Continued significant growth.
However, there really isn't a good metric to show "growth" of government. Sometimes, a government might impose a significant cost on business or employers, or significantly restrict liberty, while showing a good balance sheet. Or you might have a government engaged in a war or cleanup effort, all the while removing restrictions on liberty.
If anyone knows of a good analysis of the size of government (as in the subjective "size" including costs, taxes, freedoms, etc.) I'd love to read it.