| Year | Total Units |
|---|---|
| 2000 | 30,358 |
| 2001 | 29,059 |
| 2002 | 29,293 |
| 2003 | 29,914 |
| 2004 | 27,382 |
| 2005 | 30,180 |
| 2006 | 23,262 |
| 2007 | 18,582 |
| 2008 | 13,018 |
| 2009 | 11,123 |
| 2010 | 11,931 |
| 2011 | 13,481 |
| 2012 | 15,217 |
| 2013 | 17,918 |
| 2014 | 16,788 |
| 2015 | 17,698 |
| 2016 | 17,044 |
| 2017 | 16,224 |
| 2018 | 18,647 |
| 2019 | 18,491 |
| 2020 | 17,982 |
| 2021 | 18,496 |
| 2022 | 22,860 |
| 2023 | 18,453 |
| 2024 | 16,823 |
| 2025 | 13,358 |