This is noise complaints by year, further broken down by borough. Brooklyn and Manhattan seem to hold a steady and more or less equal share, especially in the last few years.

NYC Noise 2004 to 2017, by year and by borough

311 data from NYC Open Data downloaded at various times. As of Feb 5, 2018, 27 million rows, 52 variables till 2009, 53 variables from 2010. Parsed using R v3.4.3 in RStudio v1..1.423