They also show that the cost per quitter has increased from £160 in 2006/7 to £219 in 2008/9 (compared with £173 in 2007/8).
Total expenditure on NHS Stop Smoking Services was £74m in 2008/9, up 21% on the previous year and 44% on 2006/7.
51% of men setting a quit date were successful compared with 49% of women (161,281 of 313,920 versus 175,773 of 357,339).
The overall 50% success rate was down 4% on the previous year but an increase of 5% on 2006/7.
A total of 39% of those aged under 18 successfully quit compared with 53% of those aged 60 plus.
Liberal Democrat shadow health secretary Norman Lamb said: ‘The government is wasting NHS resources which are vitally needed to save lives.
‘It's extraordinary that more money is being spent for worse outcomes.
‘The incentive system for doctors has to be urgently changed. GPs shouldn't be paid just for referring people to stop smoking services, they should be paid for helping them to successfully quit.'
More news from 24 August