Correlation, causation, whatev ...

Dan Riehl finds:

Bush's speech was 1945 words, 54 paragraphs, or 123 lines. He used I, I'm, or my a total of 18 times. That's once in every 108 or so words.

Obama's speech was 2799 words, 29 paragraphs, or 179 lines. He likes longer paragraphs. He used I, I'm or my 42 times. That's once in every 67 or so words, or nearly twice as frequently as Bush.