| 2014 | 2015 | 2016 | 2017 | 2018 |
R&D investment (RMB 100 million) | 243.12 | 284.25 | 334.88 | 380.67 | 505.09 |
Capitalization rate of R&D Investment (%) | 20.16 | 19.51 | 17.98 | 22.26 | 33.47 |