Arf. Back when it was 16 races, it was almost consistently every other weekend, not consecutive.Same here. I remember the "good old" days of the mid 90s where we had 16 races in 16 consecutive weekends. Or I think they were consecutive weekends. Now we've got 18/19/20 races with more governments wanting a GP I think we're just stretching the teams too much and diluting the value of each race weekend.
I think they usually had a three week break for going out of Europe though. Mind you, they usually evened that out with the odd back-to-back.