年份 | 2011 | 2012 | 2013 | 2014 | 2015 | 2016 | 2017 | 2018 | 2019 | 2020 |
年际变动指数(%) | 64.25 | 75.92 | 87.79 | 106.77 | 117.95 | 128.82 | 122.76 | 109.85 | 105.85 | 80.73 |