| Date | Protections | ≤ 1 day | ≤ 1 week | ≤ 1 month | ≤ 1 year | > 1 year | Infinity | Unprotections |
|---|---|---|---|---|---|---|---|---|
| 2023 | 6,404 | 87 | 258 | 309 | 238 | 57 | 5,576 | 80 |
| 2022 | 26,723 | 301 | 784 | 1,044 | 1,134 | 98 | 25,764 | 390 |
| 2021 | 25,510 | 380 | 1,153 | 1,445 | 1,728 | 870 | 20,693 | 512 |
| 2020 | 26,303 | 511 | 1,213 | 1,448 | 1,262 | 178 | 22,281 | 559 |
| 2019 | 38,312 | 746 | 1,529 | 1,787 | 1,229 | 435 | 33,453 | 558 |
| 2018 | 48,207 | 793 | 1,781 | 1,937 | 1,710 | 15,097 | 27,687 | 523 |
| 2017 | 45,103 | 976 | 1,605 | 1,609 | 1,498 | 77 | 40,543 | 739 |
| 2016 | 23,556 | 930 | 1,715 | 1,462 | 1,317 | 200 | 19,081 | 1,256 |
| 2015 | 25,395 | 310 | 454 | 457 | 302 | 138 | 4,799 | 1,145 |
| 2014 | 31,719 | 1,038 | ||||||
| 2013 | 36,127 | 1,223 | ||||||
| 2012 | 26,686 | 911 | ||||||
| 2011 | 35,537 | 1,705 | ||||||
| 2010 | 19,078 | 1,484 | ||||||
| 2009 | 22,281 | 2,956 | ||||||
| 2008 | 56,956 | 3,749 | ||||||
| 2007 | 31,339 | 3,804 | ||||||
| 2006 | 24,405 | 4,297 | ||||||
| 2005 | 7,512 | 3,114 | ||||||
| 2004 | 53 | 34 | ||||||
| 2003 | ||||||||
| 2002 | ||||||||
| 2001 |