It increased to US $2.4 billion in 2008 , then fell to US $1.6 billion in 2012 , then it increased again in 2013 .
In the 1990s , the exported value from Vietnam to Singapore was about US $400 million .
Singapore increased to US $2.4 billion in 2008 , then fell to US $1.6 billion in 2012 , then Singapore increased again in 2013 .
In the 1990s , the exported value from Vietnam to Singapore was about US $400 million .