| Date | Protections | ≤ 1 day | ≤ 1 week | ≤ 1 month | ≤ 1 year | > 1 year | Infinity | Unprotections |
|---|---|---|---|---|---|---|---|---|
| 2023 | 19,379 | 1 | 19,378 | 3 | ||||
| 2022 | 27,405 | 27,633 | 41 | |||||
| 2021 | 14,797 | 14,804 | 49 | |||||
| 2020 | 19,015 | 19,175 | 18 | |||||
| 2019 | 21,292 | 21,310 | 16 | |||||
| 2018 | 24,556 | 25,571 | 11,714 | |||||
| 2017 | 12,637 | 1 | 2 | 12,990 | 59 | |||
| 2016 | 26,747 | 2 | 26,750 | 102 | ||||
| 2015 | 22,361 | 6,957 | 7 | |||||
| 2014 | 24,365 | 2 | ||||||
| 2013 | 32,711 | 229 | ||||||
| 2012 | 29,371 | 15 | ||||||
| 2011 | 43,142 | 63 | ||||||
| 2010 | 57,464 | 160 | ||||||
| 2009 | 23,102 | 15 | ||||||
| 2008 | 13,888 | 51 | ||||||
| 2007 | 6,036 | 104 | ||||||
| 2006 | 5,662 | 56 | ||||||
| 2005 | 124 | 6 | ||||||
| 2004 | ||||||||
| 2003 |