| Year | Caves | Plants | ||||
|---|---|---|---|---|---|---|
| mosses | pteridophytes | gymnospermaes | angiospermaes | total | ||
| Number of natural values protected | ||||||
| 1991 | 2 684 | 19 | 27 | – | 369 | 415 |
| 1995 | 2 924 | 20 | 39 | 2 | 439 | 500 |
| 2000 | 3 600 | 20 | 39 | 2 | 474 | 535 |
| 2005 | 4 110 | 78 | 43 | 1 | 573 | 695 |
| 2006 | 4 110 | 78 | 43 | 1 | 573 | 695 |
| 2007 | 4 110 | 78 | 43 | 1 | 573 | 695 |
| 2008 | 4 083 | 79 | 45 | 1 | 595 | 720 |
| 2009 | 4 092 | 79 | 45 | 1 | 595 | 720 |
| 2010 | 4 092 | 79 | 45 | 1 | 595 | 720 |
| 2011 | 4 117 | 79 | 45 | 1 | 595 | 720 |
| 2012 | 4 130 | 77 | 44 | 1 | 611 | 733 |
| 2013 | 4 137 | 77 | 44 | 1 | 611 | 733 |
| 2014 | 4 144 | 77 | 44 | 1 | 611 | 733 |
| 2015 | 4 146 | 77 | 44 | 1 | 611 | 733 |
| 2016 | 4 148 | 77 | 44 | 1 | 611 | 733 |
| 2017 | 4 152 | 77 | 44 | 1 | 611 | 733 |
| 2018 | 4 152 | 77 | 44 | 1 | 611 | 733 |
| 2019 | 4 160 | 77 | 44 | 1 | 611 | 733 |
| Of which: highly protected | ||||||
| 1991 | 108 | – | – | – | 31 | 31 |
| 1995 | 124 | – | 1 | 1 | 45 | 47 |
| 2000 | 125 | 1 | 1 | – | 50 | 52 |
| 2005 | 145 | – | 1 | 1 | 61 | 63 |
| 2006 | 145 | – | 1 | 1 | 61 | 63 |
| 2007 | 145 | – | 1 | 1 | 61 | 63 |
| 2008 | 147 | – | 2 | 1 | 68 | 71 |
| 2009 | 147 | – | 2 | 1 | 68 | 71 |
| 2010 | 147 | – | 2 | 1 | 68 | 71 |
| 2011 | 146 | – | 2 | 1 | 68 | 71 |
| 2012 | 145 | – | 7 | 1 | 79 | 87 |
| 2013 | 145 | – | 7 | 1 | 79 | 87 |
| 2014 | 146 | – | 7 | 1 | 79 | 87 |
| 2015 | 146 | – | 7 | 1 | 79 | 87 |
| 2016 | 146 | – | 7 | 1 | 79 | 87 |
| 2017 | 146 | – | 7 | 1 | 79 | 87 |
| 2018 | 146 | – | 7 | 1 | 79 | 87 |
| 2019 | 146 | – | 7 | 1 | 79 | 87 |