年份 | 2010 | 2011 | 2012 | 2013 | 2014 | 2015 | 2016 | 2017 | 2018 | 2019 | 2020 |
煤炭 | 2.66367346 | 2.66367346 | - | 2.65251185 | 2.66367346 | 2.62265793 | 2.66367346 | 2.66367346 | 2.66367346 | 2.66367346 | 2.7 |