"In 2018, 55 law enforcement officers were feloniously killed and 51 were killed accidentally, for a total of 106 killed [in the line of duty] for the year." [1]
In the same year, at least 992 people were killed by police [2]. I believe this only counts people shot to death. Cases were death was as a result of something other than shooting, e.g. strangling death of George Floyd, is not counted in this statistics. The real number would thus be higher.
[1] https://www.fbi.gov/news/stories/2018-leoka-report-released-...
[2] https://www.washingtonpost.com/graphics/2018/national/police...
Also note that there's an official office keeping accurate records of how many police officers were killed, and yet it's up to a newspaper to even attempt to track how many people the police killed.