How popular was astro boy?

It was a very popular cartoon on TV when I was a kid and the theme song- with different verses and often parodies- likewise- I like the Parody ( sounds like a song for the KGB, at least the Hollywood=ized KGB_ verse two: Overdrive: Cut-in ( High), Strange Nude Girls you Espy! Pana-Celled, ( a type of battery by Panasonic) Jet=-Propelled, with your strobe light eye flashing by! get this- Down the Basement we go,will you fight, friend or foe! what can I do, to be like you, become one of Katherine"s Good Boys!

Very popular, and he still is!