Despite this significant increase, the debt is manageable and sustainable, evidenced by stable outlooks given by the major credit rating agencies such as Moody's, Standard & Poor's and Fitch Ratings. Indonesia's ratio of public debt to GDP was 28.7 percent at the end of 2013; a healthy ratio compared to most other emerging or developed countries:

Country    Debt to GDP Ratio
Japan               243%
USA               106%
Malaysia                57%
Thailand                47%
Philippines                41%
Indonesia               28.7%

Source: Investor Daily

Meanwhile, Indonesia's GDP has also grown from IDR 5,613 trillion (USD $463.9 billion) in 2009 to IDR 9,112 trillion (USD $753.1 billion) in 2013.

Further Reading:

Analysis of Public Debt of Indonesia