From 2002 to 2013, the state received US$ 450 billion worth of oil income. (blog.politics.ox.ac.uk)
According to a fiscal policy rule, the government is allowed to use oil income equivalent to 4 percent of the fund. (nreionline.com)
A variety of factors, like regulations, exchange and price controls, and insecurity would inhibit the broader Venezuelan economy's ability to respond in the event oil income dried up, Rodriguez added. (businessinsider.com)