| Years | Indonesia | Malaysia | Netherlands | Philippines | Sri Lanka |
| 2010 | 1.00 | 0.45 | 0.78 | 1.00 | −0.41 |
| 2011 | 1.00 | 0.42 | 0.81 | 1.00 | −0.58 |
| 2012 | 0.99 | 0.49 | 0.95 | 1.00 | 0.04 |
| 2013 | 0.99 | 0.79 | 0.98 | 1.00 | 0.12 |
| 2014 | 1.00 | 0.57 | 0.98 | 0.99 | 0.78 |
| 2015 | 1.00 | 0.60 | 0.94 | 0.99 | 0.87 |
| 2016 | 1.00 | 0.62 | 0.90 | 1.00 | 0.83 |
| 2017 | 0.99 | 0.41 | 0.87 | 1.00 | 0.57 |
| 2018 | 0.99 | 0.64 | 0.88 | 1.00 | 1.00 |
| 2019 | 0.96 | 0.88 | 0.84 | 1.00 | 0.56 |
| 2020 | 0.98 | 0.81 | 0.84 | 0.99 | −0.61 |
| Average | 0.99 | 0.61 | 0.89 | 1.00 | 0.29 |