| Date | Protections | ≤ 1 day | ≤ 1 week | ≤ 1 month | ≤ 1 year | > 1 year | Infinity | Unprotections |
|---|---|---|---|---|---|---|---|---|
| 2023 | 4,142 | 30 | 1,606 | 673 | 1,254 | 26 | 705 | 4 |
| 2022 | 16,145 | 216 | 5,769 | 3,327 | 4,804 | 71 | 2,765 | 161 |
| 2021 | 13,536 | 209 | 4,247 | 2,933 | 3,609 | 32 | 3,328 | 223 |
| 2020 | 13,612 | 205 | 4,374 | 2,835 | 3,738 | 39 | 2,807 | 52 |
| 2019 | 12,204 | 219 | 2,762 | 3,063 | 2,566 | 201 | 4,061 | 182 |
| 2018 | 6,343 | 189 | 963 | 1,806 | 758 | 33 | 2,840 | 39 |
| 2017 | 6,143 | 147 | 857 | 1,289 | 794 | 11 | 4,005 | 79 |
| 2016 | 6,237 | 207 | 1,228 | 1,494 | 1,059 | 68 | 2,481 | 79 |
| 2015 | 8,827 | 71 | 272 | 314 | 169 | 73 | 400 | 82 |
| 2014 | 7,562 | 126 | ||||||
| 2013 | 6,333 | 76 | ||||||
| 2012 | 6,634 | 137 | ||||||
| 2011 | 6,833 | 154 | ||||||
| 2010 | 7,154 | 225 | ||||||
| 2009 | 7,615 | 315 | ||||||
| 2008 | 5,070 | 424 | ||||||
| 2007 | 2,295 | 400 | ||||||
| 2006 | 933 | 362 | ||||||
| 2005 | 59 | 29 | ||||||
| 2004 | 1 | |||||||
| 2003 | ||||||||
| 2002 |