According to Stratistics MRC, the Global E-Cigarettes & Vapourizer Market accounted for $7.47 billion in 2015 and is anticipated to reach $28.57 billion by 2022 growing at a CAGR of 21.1% from 2015 to 2022. http://www.medgadget.com/2016/05/e-cigarettes-market-analysis-trends-size-share-investment-opportunities-and-forecast-to-2022.html