| Year | |
|---|---|
| 1997 | 678.2 |
| 1998 | 705.6 |
| 1999 | 494.7 |
| 2000 | 555.5 |
| 2001 | 556.0 |
| 2002 | 607.1 |
| 2003 | 614.1 |
| 2004 | 615.0 |
| 2005 | 601.6 |
| 2006 | 609.8 |
| 2007 | 607.0 |
| 2008 | 617.2 |
| 2009 | 635.4 |
| 2010 | 658.9 |
| 2011 | 658.6 |
| 2012 | 674.1 |
| 2013 | 677.6 |
| 2014 | 683.6 |
| 2015 | 706.1 |
| 2016 | 702.9 |
| 2017 | 720.2 |
| 2018 | 757.2 |
| 2019 | 781.8 |
| 2020 | 805.0 |
| 2021 | 832.4 |
| 2022 | 853.3 |
| 2023 | 870.9 |
| 2024 | 876.2 |