The MTA saw more than 67,000 delays on subways during weekdays this past May, according to the transit agency.
Newly-released figures show that subway delays and overcrowding are rising rapidly, the MTA said.
The May count was more than a 33 percent increase from May of 2016, when there were about 50,000 delays.
It is also more than double the number of slowdowns that straphangers dealt with in May of 2013.
Nearly 27,000 of the delays this May were caused by overcrowding, compared to about four thousand four years ago.
Weekend delays are also up over the past few years, although they decreased from last May.
About a quarter of those are because of track work.