I believe Sri-Lankan rupee can adjust to $ 140-142 by the end of 2016. In addition, Just like Central Banks in other countries, there might be intervention in the currency. There are Central Banks that they want to bring down their overvalued currencies and there are Central Banks that they want bring up their currencies.
https://www.poundsterlinglive.com/aud/4080-aussie-dollar-outlook-has-one-key-risk
Citibank, the world’s largest currency dealer, believes the major threat to extensive Aussie dollar appreciation is the Reserve Bank of Australia.