According to the historical tables of the Office of Management and Budget, spending in 1929 was $3.1 billion, up from $2.9 billion the year before. In 1930 it was $3.3 billion. In 1931, Hoover raised spending to $3.6 billion. And in 1932, he opened the taps to $4.7 billion, where it basically stayed into 1933 (most of which was a Hoover budget). As a percentage of GDP, spending rose from 3.4% in 1930 to 8% in 1933--an increase larger than the increase under FDR, though of course thankfully under FDR, the denominator (GDP) had stopped shrinking.
“This spending represented a substantial increase over the Coolidge years (outlays had been steady between $2.85 billion and $2.95 billion since 1924). And in real terms they represented a very substantial increase, since both nominal and real GDP were falling.” --McArdle cited at Examiner