The percentage quoted (70 percent) was quoted directly from a doco showing the state of Australias health system viewed on the ABC, commissioned by the Rudd Federal Government.
70 percent of all long term bed usage in hospital is related to smoking attributed illnesses. look at how many people who are today in their late fifties and 60's did smoke all of their lives. the percentage is huge. probably 80 percent of those generations were heavy smokers, both men and women.
Sadly, some of these people who stopped smoking, still ended up dying from smoking related diseases 20 years later anyway. Life is too short as it is than to poison ya self. The government is to blame for allowing such a devastating product with chemicals designed to create addiction.