| Date | Protections | ≤ 1 day | ≤ 1 week | ≤ 1 month | ≤ 1 year | > 1 year | Infinity | Unprotections |
|---|---|---|---|---|---|---|---|---|
| 2023 | 621 | 8 | 27 | 38 | 64 | 62 | 434 | 9 |
| 2022 | 514 | 1 | 19 | 36 | 98 | 17 | 371 | 11 |
| 2021 | 493 | 3 | 26 | 53 | 185 | 242 | 8 | |
| 2020 | 388 | 12 | 23 | 45 | 2 | 329 | 11 | |
| 2019 | 370 | 6 | 22 | 21 | 20 | 24 | 301 | 19 |
| 2018 | 271 | 3 | 8 | 26 | 22 | 228 | 13 | |
| 2017 | 148 | 1 | 1 | 4 | 7 | 153 | 6 | |
| 2016 | 197 | 1 | 6 | 3 | 8 | 187 | 5 | |
| 2015 | 100 | 1 | 4 | 1 | 1 | 33 | 3 | |
| 2014 | 611 | 2 | ||||||
| 2013 | 40 | 2 | ||||||
| 2012 | 90 | 4 | ||||||
| 2011 | 83 | 1 | ||||||
| 2010 | 29 | 2 | ||||||
| 2009 | 14 | |||||||
| 2008 | 8 | |||||||
| 2007 | 3 | 1 | ||||||
| 2006 | 19 | 5 | ||||||
| 2005 | 7 | |||||||
| 2004 |