I am swimming in sap today! 
It is going like crazy. In only 2 hrs I collected 20 gallons with 80 taps. Started to boil this morning with my 45 gallons in my storage tank.
probably another 40 to come by day end. That's a lot of sap for a hobbyist. Lol.
2011 35 taps
2012 50 taps
2013 80 taps maybe to 100
2014 80 taps
2015 New sugar shack, 50 taps on buckets and 100 on 3-16 gravity tubing.
A tolerating wife and a 14 years old not so helper.
2016 New evaporator and 150 taps all on 3/16 high vacuum gravity.