Spline chart. Data table with 2 rows and 21 columns follows.
| 2003 | 2004 | 2005 | 2006 | 2007 | 2008 | 2009 | 2010 | 2011 | 2012 | 2013 | 2014 | 2015 | 2016 | 2017 | 2018 | 2019 | 2022 | 2023 | 2024 | 2025 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 3.657 | 4.357 | 4.965 | 5.229 | 4.614 | 5.663 | 5.672 | 4.648 | 4.287 | 3.463 | 3.431 | 3.458 | 3.074 | 2.912 | 3.148 | 2.720 | 2.653 | 2.565 | 2.775 | 2.137 | 2.156 |