In 2010, Tanzania devoted 0.38 per cent of GDP to research and development. The global average in 2013 was 1.7 per cent of GDP. Tanzania had 69 researchers (in head counts) per million population in 2010. In 2014, Tanzania counted 15 publications per million inhabitants in internationally catalogued journals, according to Thomson Reuters' Web of Science (Science Citation Index Expanded). The average for sub-Saharan Africa was 20 publications per million inhabitants and the global average 176 publications per million inhabitants. Tanzania was ranked 88th in the Global Innovation Index in 2020, up from 97th in 2019.