2014 and 2015 you are a family of 3 ( 1 you + 2 your parents)
2016 you are family of 4 (1 you+ 2 your parents + 1 your wife)
2017 you are family of 5 with the birth of your baby.
2014 - $47,051
2015- $47,456
2016- $58,768
2017- is not required at this time and is not mentioned in the LICO chart in the guide. For 2016 however income for family size 5 is $66,654 so for 2017 it should be in that range as well within a margin of error so you need to maintain your annual gross income for 2017 onwards in that range. For now I would suggest attaching Option C printout from your CRA account along with giving consent for cic to access your cra account in the application for pgp.
Hope I covered everything.