33629
From 1984 to 1991 , the Official Development Assistance ( ODA ) budget increased at an average annual rate of 22.5 % , reaching US$ 11.1 billion by 1991 .
 None
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: location, person, organization 
Text: {0} 
Answer:
 None