Source: http://www.wfdsa.org/about_wfdsa/?fa=globalStats
Quoting from the above Source:
" The World Federation of Direct Selling Associations (WFDSA) is pleased to present record industry sales and sales force figures for 2013.
Sales figures are expressed at Estimated Retail level and exclude Value Added Tax.
Except as footnoted, sales figures are based on the entire industry (i.e., member and non-member companies), and other figures are based on member companies only.
Sales figures for 2010-2013 are expressed in US Constant 2013 Dollars to exclude the impact of foreign exchange and ensure comparability. WFDSA uses average annual exchange rates from the International Monetary Fund to convert data from local currency to US dollars.
The Direct Selling sales force of independent contractors includes individuals who are career minded entrepreneurs building their own businesses… or part-time entrepreneurs earning extra income. All enjoy significant discounts on products. In fact, some choose only to enjoy and use the products and not to sell at all."
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