年份 | 进口 | 出口 |
2010 | 0.798 | 0.570 |
2011 | 0.773 | 0.698 |
2012 | 0.780 | 0.691 |
2013 | 0.782 | 0.727 |
2014 | 0.781 | 0.745 |
2015 | 0.798 | 0.757 |
2016 | 0.812 | 0.766 |
2017 | 0.790 | 0.767 |
2018 | 0.792 | 0.767 |
2019 | 0.787 | 0.782 |
2020 | 0.796 | 0.795 |
2021 | 0.779 | 0.796 |
2022 | 0.796 | 0.805 |