Table 1.
Species | Decade | |||||||
---|---|---|---|---|---|---|---|---|
1950s | 1960s | 1970s | 1980s | 1990s | 2000s | 2010s | Total | |
Rats | 286 | 1,779 | 2,852 | 1,168 | 1,445 | 1,025 | 449 | 9,004 |
Pigeons | 82 | 1,964 | 4,202 | 2,341 | 1,757 | 1,224 | 419 | 11,989 |
Humans | 386 | 1,436 | 970 | 1,599 | 1,789 | 3,112 | 2,349 | 11,641 |
Nonhuman primates | 28 | 356 | 319 | 148 | 104 | 63 | 8 | 1,026 |
Other species | 23 | 362 | 304 | 182 | 146 | 323 | 137 | 1,477 |
Total | 805 | 5,897 | 8,647 | 5,438 | 5,241 | 5,747 | 3,362 | 35,137 |