Description
An episode by episode and season by season analysis which I did myself and cannot find elsewhere (so far, I can only find the total burp count without any breakdown by episode/season).
Rick became a bit more sober after he went to jail at the end of Season 2; therefore, the burp count is significantly lower onwards and the episode "Raising Gazorpazorp" had a couple of instances where the burps were very close (within two seconds) of each other; also, the episode "Promortyus" did not have any.
Also, there were very few in Season 7 since creator Justin Roiland was dropped from Adult Swim.
In the pilot, a large number of empty bottles of spirits spilled out of a spaceship Rick and Morty were travelling in - it is unclear if it was an accumulation of bottles over time or that Rick consumed a large quantity of spirits in one sitting.
When the season finale for each new season arrives in my country, this graph will be updated.