158 people a day in a city of more than 8 million? I think you need to re-think that. More like 400/day is normal for NYC.
NYC had 53,006 deaths from all causes in 2014
NYC had 2,220 deaths from Influenza and Pneumonia in 2014
https://data.cityofnewyork.us/Health/New-York-City-Leading-Causes-of-Death/jb7j-dtam
You have to export the data to Excel and add it up. But here’s another confirmation - a death every 9.1 minutes. There are 24*60 = 1440 minutes in a day. 1440/9 is 158
Your number of 400 deaths a day is probably for the entire state of New York, not New York City.
https://www1.nyc.gov/site/planning/planning-level/nyc-population/population-facts.page