Yes, he did say something similar, but in a different context.
As Jan has found in the speech of 13th of November 1931 (page 3870), these statements were made with the goal to differentiate their goals from that of the other main parties.
In the speech quoted below, made shortly before a local state parliament election, he goes into great detail how the ...
On November 13th, 1931, Hitler said in Darmstadt (emphasis mine):
Mit 25 Jahren bin ich ins Feld, mit 31 kam ich zurück, und heute, mit 42 Jahren stehen Millionen hinter mir.
At the age of 25, I joined the war, at the age of 31, I returned, and today, at the age of 42, millions support me.
Obviously Hitler's words were supposed to refer to millions ...