Here are the numbers for my 2018 Leaf so far:
Leaf Spy readings April 9, 2018 at 819 km (512 mi)
AHr - 114.944, SOH - 99.57, Hx - 99.37
Leaf Spy readings June 3, 2018 at 3,831 km (2,394 mi)
AHr - 114.505, SOH - 99.19, Hx - 111.58
Assuming linear degradation over time (not likely), I could expect to lose about 2.4% SOH annually. Based on driving 20,000 km (12,500 mi)/year, the degradation over distance works out to about the same number.
For reference, I live in a relatively cool Canadian climate. The car is almost always parked in a garage with an ambient temperature range of 0-24 C (32-75 F). There are no rapid chargers within hundreds of miles so all charging is L2, usually between 20 and 80%, with a couple charges a week to 100% then driving immediately after.
2018 Leaf SL, 43,577 km, SOH - 92.16%, Hx - 119.23, AHr - 106.39
2020 Model 3 Performance, 9,581 km