New York (CNN Business) The North American box office has seen a strong start so far in 2020 thanks to the surprise successes of "1917" and "Bad Boys for Life." The box office is doing so well, in fact, that it's up 10% compared to this time last year.

But Hollywood's strong start may not last for all of 2020.

As for 2020, this year has some potential blockbusters on the docket, but on paper it looks to be a weaker year than 2019. This is because 2020's slate doesn't appear to have as many must-see movies as last year.

So what does that mean for this year's box office? Nothing good, according to Jeff Bock, senior analyst at entertainment research firm Exhibitor Relations.

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