This task is about reading the given passage and construct a question about the information present in the passage. Construct a question in such a way that (i) it is unambiguous, (ii) it is answerable from the passage, (iii) its answer is unique (iv) its answer is a continuous text span from the paragraph. Avoid creating questions that (i) can be answered correctly without actually understanding the paragraph and (ii) uses same words or phrases given in the passage.
Q: Public expenditure health was at 8.9% of the GDP in 2004, whereas private expenditure was at 1.3%. As of 2012, the HIV/AIDS prevalence was at 2.8% among 15- to 49-year-olds. Health expenditure was at US$30 per capita in 2004. A large proportion of the population is undernourished, with malnutrition being a problem in Congo-Brazzaville. There were 20 physicians per 100,000 persons in the early 2000s (decade).
A:
How much of the gross domestic product was spent on public health in 2004?