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Timeline:
 This timeline shows a graph from 1999 to 2005 of Tonga. No data until 1998. Number of actual observations by date: 4. 
Source name:
 World Development Indicators 
Source organization:
 UNESCO Institute for Statistics 
Categories, topics:
 Education 
Last updated:
apr 23, 2017
Indicators value changes by year
Minimum:
28.472
jan 1, 1999
Maximum:
49.164
jan 1, 2003
At the date of observation
Value
Absolute change
Change from the previous value
jan 1, 1999
28.472
 +28.472 
 0.0% 
jan 1, 2003
49.164
 +20.692 
 72.67% 
jan 1, 2004
37.762
 -11.402 
 -23.19% 
jan 1, 2005
44.438
 +6.676 
 17.68% 
Ranking of countries by current statistics by years