The Balance Budgets of Clinton were!
Produced by a Conservative Senate and Congress that said if it isn't Balanced we'll vetoe it.
The Same could be said of all budgets. Remember all budgets have to be approved by the Houses of Congress. They are as instrumental in the make up of the budget process as the Presidents themselves.
Your statics mean very little until analized by the make-up of congress at the time. Most Republican presidents served as minority presidents (the Senate and the House were Democrat) which means they often forced an unbalanced budget. So Clinton's balanced budgets were really Republican Budgets forced upon a minority President.
Keith