Based on a comparison of 169 countries in 2014, Sierra Leone ranked the highest in private health expenditure as a percentage of GDP with 9.21% followed by USA and Liberia. On the other end of the scale was East Timor with 0.142%, Brunei with 0.163% and Seychelles with 0.263%.
Average private health expenditure as a percentage of GDP reached 3.94% in 2014 in the World according to World Bank / WHO. This is 0.816 % more than in the previous year and -2.70 % less than 10 years ago.
Historically, average private health expenditure as a percentage of GDP reached an all time high of 4.15% in 2003 and an all time low of 3.22% in 1995. The average annual growth amounted to 1.06 % since 1960.
Data for more countries are available at Private Health Expenditure (As % of GDP) indicator page.