Dasgupta, on the other hand, had rubbished the claim saying that the union finance ministry did not take the relevant period. If it takes the period after value added tax (VAT) was implemented in states, the figures would present a different picture. VAT was implemented in a majority of states from April 1, 2005. According to Dasgupta, the growth rate of tax revenue of the states had increased significantly post-VAT–– from a historic rate of growth of 12 per cent of sales tax revenue a year to more than 20 per cent growth rate of VAT revenue a year. He also said that the rate of growth of pension has also started falling in recent years. For West Bengal, for instance, during the last three financial years (2004-05, 2005-06 and 2006-07), growth in pension expenditure has been generally below 10 per cent, he had said.) – for online.