| Date | Protections | ≤ 1 day | ≤ 1 week | ≤ 1 month | ≤ 1 year | > 1 year | Infinity | Unprotections |
|---|---|---|---|---|---|---|---|---|
| 2023 | 117 | 12 | 10 | 42 | 22 | 6 | 31 | |
| 2022 | 544 | 19 | 37 | 82 | 84 | 15 | 332 | 2 |
| 2021 | 173 | 4 | 31 | 52 | 36 | 79 | 3 | |
| 2020 | 359 | 23 | 33 | 49 | 24 | 5 | 258 | 9 |
| 2019 | 287 | 15 | 32 | 68 | 69 | 10 | 118 | 5 |
| 2018 | 234 | 18 | 34 | 51 | 69 | 1 | 89 | 8 |
| 2017 | 216 | 14 | 27 | 79 | 24 | 100 | 7 | |
| 2016 | 409 | 27 | 39 | 53 | 48 | 307 | 34 | |
| 2015 | 226 | 5 | 3 | 5 | 9 | 3 | 54 | 76 |
| 2014 | 108 | 8 | ||||||
| 2013 | 35 | 12 | ||||||
| 2012 | 66 | 12 | ||||||
| 2011 | 104 | 6 | ||||||
| 2010 | 83 | 13 | ||||||
| 2009 | 104 | 21 | ||||||
| 2008 | 206 | 67 | ||||||
| 2007 | 239 | 85 | ||||||
| 2006 | 67 | 42 | ||||||
| 2005 | 22 | 6 | ||||||
| 2004 | 1 | |||||||
| 2003 |