The minimum wage went from $7.25 in 2013 to $13.50 last year, finally increasing to $15 last year as well. It didn't all jump last year, so the data of 2013-2018 still appears valid.

http://www.centernyc.org/new-york-citys-15-minimum-wage

actual report:

https://static1.squarespace.com/static/53ee4f0be4b015b9c3690...

At least talking about restaurants with tipped employees, the $15/hr includes a $5/hr tip wage! If a server makes enough in tips, the min wage the restaurant pays is only $10/hr. See appendix figure 1, page 22 of the pdf.