Data Table
| Year | Value (SE) |
|---|
| 2000 | 0.6700 (0.0088) |
| 2001 | 0.6650 (0.0044) |
| 2002 | 0.5970 (0.0236) |
| 2003 | 0.5600 (0.0091) |
| 2004 | 0.5810 (0.0060) |
| 2005 | 0.6030 (0.0021) |
| 2006 | 0.6340 (0.0081) |
| 2007 | 0.5540 (0.0067) |
| 2008 | 0.5810 (0.0071) |
| 2009 | 0.5140 (0.0054) |
| 2010 | 0.5670 (0.0136) |
| 2011 | 0.6300 (0.0072) |
| 2012 | 0.5710 (0.0056) |
| 2013 | 0.6540 (0.0111) |
| 2014 | 0.7130 (0.0077) |
| 2015 | 0.7290 (0.0301) |
| 2016 | 0.6550 (0.0058) |
| 2017 | 0.7000 (0.0124) |
| 2018 | 0.7020 (0.0107) |
| 2019 | 0.6180 (0.0138) |
| 2020 | 0.7420 (0.0120) |
| 2021 | 0.7830 (0.0119) |
| 2022 | 0.7350 (0.0122) |
| 2023 | 0.6600 (0.0065) |
| 2024 | 0.6860 (0.0147) |
