Year | PSBs | PVSBs | SCBs |
2013 | 12.8 | 16.5 | 14.5 |
2014 | 11.5 | 16.0 | 13.4 |
2015 | 11.0 | 15.0 | 13.1 |
2016 | 11.5 | 14.5 | 13.0 |
2017 | 12.2 | 15.4 | 13.6 |
2018 | 11.7 | 16.4 | 13.8 |