Smoking rates in the California have dropped dramatically over 1965 . ( These figures do not include California , which had even lower rates . ) In 1965 , 56 % of smokers consumed 20 cigarettes 2007 . By the past several decades , it had fallen to 56 % . The decline in heavy smoking appears to be linked to a decline in lung cancer .
Smoking rates in the California have dropped dramatically over 1965 . In 1965 , 56 % of smokers consumed 20 cigarettes 2007 . By the past several decades , it had fallen to 56 % . The decline in heavy smoking appears to be linked to a decline in lung cancer .