Year | Value | 2022 | 73.635038430957 | 2021 | 74.005219441015 | 2020 | 72.709686608983 | 2019 | 75.180902718609 | 2018 | 73.914392475924 | 2017 | 74.575655851687 | 2016 | 73.752444053264 | 2015 | 73.050147260345 | 2014 | 73.926720785882 | 2013 | 73.043724508008 | 2012 | 73.881092874653 | 2011 | 76.116667202624 | 2010 | 74.675101130058 |
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