Spending on research and development of each country and “studies for money” within all specialities (left) and CAM-related studies (right).

<p>Latest available data were used. If not stated otherwise. data are of 2007.</p>1<p>Gross Domestic Product in billion US-Dollar;</p>2<p>Gross domestic expenditure on R&D;</p>3<p>Studies per billion US-Dollar spent on R&D;</p>4<p>2004;</p>5<p>2005;</p>6<p>2006;</p>7<p>R&D conducted by state and local governments is excluded;</p>8<p>Due to the lack of a comprehensive business register in South Africa. R&D expenditure may be underestimated by 10% to 15%.