on the whole
on the whole {adv. phr.}
1. In the most important things; in most ways.
On the whole, Billy did very well in school this year.
Everybody agreed that on the whole it was a good show.
2. In most cases; usually.
On the whole, men are stronger than women.
On the whole, children begin walking when they are about one year old.
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Source: A Dictionary of American Idioms