Opening post:
First, how many model kits do you own?
How many builds did you complete last year?
Calculate build percentage.
If I owned 100 unbuilt kits, and I built 25 last year, my completion percentage would be 25% of the kits I owned (25 out of 100 owned). If I owned 500 kits, and completed 50 of them, my completion percentage would be 10% (50 out of 500).
There is no way you can build more than 100% of the kits that you own. No matter how many kits you own, it's impossible to build more than that. Building every kit you own would mean your build percentage is 100%. You can't build 110% of the kits you own, because you only own 100% of the kits you own! You can't possibly own (or build) more kits than you have!