That article is a bit off:
According to an article published by the CDC, incidence of death from lightning strike in the United States in 1980 through 1995 (most recent I could find with a quick search) was 3 per 10,000,000.

Source:
Lightning-Associated Deaths -- United States, 1980-1995

A pub-med abstract I found shows the rate as 2.3 per 10,000,000 from 1995-2000.
Struck-by-lightning deaths in the United St... [J Environ Health. 2005] - PubMed - NCBI