[artwr]

I was indeed counting from the declaration of independence and was trying to round to the nearest natural fractions, but you are technically correct, which is the best kind of correct.

[SllX]

Nope, you were closer to correct. The Constitution isn’t the founding of America: the Union formed first under the Articles of Confederation but our first act as a Union separate from the UK was the Declaration of Independence.

[cygx]

Thanks for the correction, I retract my objection. We could also start counting from when the Articles of Confederation came into effect (1781), which lies approximately between 1/3 and 1/4 ;)