| Date | Protections | ≤ 1 day | ≤ 1 week | ≤ 1 month | ≤ 1 year | > 1 year | Infinity | Unprotections |
|---|---|---|---|---|---|---|---|---|
| 2024 | 91 | 10 | 26 | 46 | 10 | 2 | 1 | |
| 2023 | 164 | 1 | 60 | 42 | 28 | 16 | 23 | 15 |
| 2022 | 84 | 38 | 16 | 20 | 3 | 12 | 5 | |
| 2021 | 80 | 10 | 36 | 16 | 12 | 1 | 6 | 6 |
| 2020 | 65 | 2 | 18 | 18 | 22 | 2 | 4 | 5 |
| 2019 | 98 | 20 | 30 | 25 | 14 | 18 | 8 | |
| 2018 | 63 | 2 | 4 | 10 | 18 | 4 | 27 | 2 |
| 2017 | 55 | 3 | 5 | 9 | 17 | 12 | 14 | 6 |
| 2016 | 47 | 2 | 2 | 7 | 18 | 8 | 11 | 4 |
| 2015 | 36 | 1 | 3 | 3 | 2 | 5 | ||
| 2014 | 30 | 6 | ||||||
| 2013 | 83 | 10 | ||||||
| 2012 | 85 | 9 | ||||||
| 2011 | 99 | 4 | ||||||
| 2010 | 121 | 63 | ||||||
| 2009 | 167 | 93 | ||||||
| 2008 | 190 | 67 | ||||||
| 2007 | 155 | 53 | ||||||
| 2006 | 92 | 13 | ||||||
| 2005 | 22 | 17 | ||||||
| 2004 | ||||||||
| 2003 |