The modern compact fluorescent lamp (CFL) was developed in 1985, so the year 2010 essentially marks its 25th anniversary. How has the CFL grown over the years?
In 1997, 13.3 million CFLs were sold in the United States. In 2001 (just four short years later), that number grew to 57 million bulbs.
Last year, more than 273 million CFLs were sold in the US. A recent survey by Sylvania also found that 70 percent of homes have at least one CFL.