Data Table
| Year | Value (SE) |
|---|
| 2000 | 0.4890 (0.0570) |
| 2001 | 0.3680 (0.0165) |
| 2002 | 0.6030 (0.0098) |
| 2003 | 0.5060 (0.0119) |
| 2005 | 0.4970 (0.0342) |
| 2006 | 0.5390 (0.0164) |
| 2007 | 0.5960 (0.0088) |
| 2008 | 0.7630 (0.0632) |
| 2009 | 0.5350 (0.0299) |
| 2010 | 0.6350 (0.0331) |
| 2011 | 0.5230 (0.0347) |
| 2012 | 0.7000 (0.0290) |
| 2013 | 0.6950 (0.0426) |
| 2014 | 0.6930 (0.0462) |
| 2015 | 0.5120 (0.0335) |
| 2016 | 0.5630 (0.0290) |
| 2017 | 0.4870 (0.0202) |
| 2018 | 0.5150 (0.0375) |
| 2019 | 0.3850 (0.0239) |
| 2020 | 0.3670 (0.0281) |
| 2021 | 0.3980 (0.0509) |
| 2022 | 0.3990 (0.0652) |
| 2023 | 0.2740 (0.0244) |
| 2024 | 0.4790 (0.0659) |
