| Time range | Vertebrates | Invertebrates | Primary producers | Vertebrates (cumulative) | Invertebrates (cumulative) | Primary producers (cumulative) |
|---|---|---|---|---|---|---|
| 1949-1951 | 5 | 7 | 4 | 5 | 12 | 16 |
| 1952-1957 | 9 | 26 | 7 | 9 | 35 | 42 |
| 1958-1963 | 12 | 56 | 11 | 12 | 68 | 79 |
| 1964-1969 | 18 | 106 | 20 | 18 | 124 | 144 |
| 1970-1975 | 25 | 165 | 32 | 25 | 190 | 222 |
| 1976-1981 | 32 | 217 | 48 | 32 | 249 | 297 |
| 1982-1987 | 39 | 263 | 68 | 39 | 302 | 370 |
| 1988-1993 | 50 | 320 | 102 | 50 | 370 | 472 |
| 1994-1999 | 57 | 412 | 143 | 57 | 469 | 612 |
| 2000-2005 | 75 | 520 | 189 | 75 | 595 | 784 |
| 2006-2011 | 115 | 598 | 214 | 115 | 713 | 927 |
| 2012-2017 | 151 | 658 | 230 | 151 | 809 | 1039 |