A 100-watt incandescent light bulb runs for 2000 hours. A compact fluorescent light (CFL) bulb of the same light output also runs for 2000 hours. Assuming that CFL bulbs use 20% of the energy that incandescent bulbs consume and given the electricity cost is $0.10 per kilowatt hour, what is the difference in operating cost of the two lights over each bulb's lifespan to the nearest dollar?