| Date | Protections | ≤ 1 day | ≤ 1 week | ≤ 1 month | ≤ 1 year | > 1 year | Infinity | Unprotections |
|---|---|---|---|---|---|---|---|---|
| 2023 | 1,694 | 5 | 5 | 20 | 18 | 2 | 1,672 | 6 |
| 2022 | 8,534 | 30 | 34 | 54 | 71 | 4 | 8,737 | 8 |
| 2021 | 7,777 | 19 | 24 | 37 | 45 | 1 | 8,083 | 10 |
| 2020 | 6,870 | 155 | 58 | 79 | 73 | 10 | 6,633 | 11 |
| 2019 | 9,035 | 81 | 76 | 131 | 109 | 43 | 8,970 | 14 |
| 2018 | 3,316 | 64 | 90 | 96 | 118 | 2 | 3,085 | 37 |
| 2017 | 743 | 58 | 36 | 60 | 54 | 3 | 613 | 30 |
| 2016 | 2,218 | 59 | 40 | 32 | 52 | 2,094 | 16 | |
| 2015 | 3,006 | 9 | 8 | 15 | 4 | 1 | 2,502 | 20 |
| 2014 | 2,675 | 10 | ||||||
| 2013 | 4,428 | 25 | ||||||
| 2012 | 255 | 25 | ||||||
| 2011 | 818 | 550 | ||||||
| 2010 | 435 | 15 | ||||||
| 2009 | 413 | 28 | ||||||
| 2008 | 947 | 30 | ||||||
| 2007 | 261 | 36 | ||||||
| 2006 | 179 | 21 | ||||||
| 2005 | 96 | 29 | ||||||
| 2004 | ||||||||
| 2003 | ||||||||
| 2002 | ||||||||
| 2001 |