Year | Low level area | Medium–low level area | Medium–high level area | High level area |
---|---|---|---|---|
2013 | 0.082–0.130 | 0.130–0.198 | 0.198–0.288 | 0.288–0.615 |
2014 | 0.061–0.162 | 0.162–0.239 | 0.239–0.340 | 0.340–0.587 |
2015 | 0.075–0.141 | 0.141–0.225 | 0.225–0.363 | 0.363–0.586 |
2016 | 0.092–0.170 | 0.170–0.247 | 0.247–0.356 | 0.356–0.695 |
2017 | 0.103–0.147 | 0.147–0.243 | 0.243–0.384 | 0.384–0.744 |
2018 | 0.105–0.188 | 0.188–0.261 | 0.261–0.382 | 0.382–0.664 |
2019 | 0.115–0.153 | 0.153–0.214 | 0.214–0.402 | 0.402–0.578 |