Out of the little over 10'000 images which were retained (a multiple of this in clicks, but I dont have the stats) in the Lightroom (Lr) catalog, during 2016, about 28% were taken with the 300mm f/2.8 VRII (*), followed by 26% with the 28-300mm f/4.5-5.6, and 15% with the 16-35mm f/4 (all Nikkor lenses). The high percentage of 300mm pictures is attributable to the fact that I've spend most of my summer time on car racing circuits. About 78% of he pictures have been taken with the Nikon D5, the remainder with he D4s (sold in february 2016), the D610, but also 8% with smartphones (iPhone 6, and 6sPlus).
(*) out of the 300mm f/2.8 VRII, 1/3 of these pictures (10% in absolute) were taken at 600mm, with the TC-20E III, or a mere 10% in absolute.
Statistics like these, are only a few click away by applying the provided filters on the Lr Catalog