| Year | 1997 | 1998 | 1999 | 2000 | 2001 | 2002 | 2003 | 2004 | 2005 | 2006 | 2007 | 2008 | 2009 | 2010 | 2011 |
| Nesting Attempts | 293 | 402 | 399 | 458 | 591 | 450 | 554 | 652 | 641 | 678 | 519 | 565 | 552 | 484 | 414 |
| Failed Attempts | 55 | 137 | 119 | 104 | 156 | 136 | 153 | 182 | 196 | 182 | 105 | 166 | 159 | 150 | 145 |
| % Successful | 81% | 66% | 70% | 77% | 74% | 70% | 72% | 72% | 69% | 73% | 80% | 71% | 71% | 69% | 65% |
| % Failed | 19% | 34% | 30% | 23% | 26% | 30% | 28% | 28% | 31% | 27% | 20% | 29% | 29% | 31% | 35% |
| Eggs Laid | 1451 | 1984 | 2004 | 2330 | 2992 | 2187 | 2806 | 3265 | 3206 | 3400 | 2594 | 2897 | 2827 | 2430 | 2043 |
| Eggs per Attempt | 5.0 | 4.9 | 5.0 | 5.1 | 5.1 | 4.9 | 5.1 | 5.0 | 5.0 | 5.0 | 5.0 | 5.1 | 5.1 | 5.0 | 4.9 |
| Young Hatched | 1227 | 1491 | 1540 | 1850 | 2408 | 1625 | 2146 | 2502 | 2371 | 2577 | 2026 | 2118 | 2125 | 1743 | 1507 |
| % Hatched | 85% | 75% | 77% | 79% | 80% | 74% | 76% | 77% | 74% | 76% | 78% | 73% | 75% | 72% | 74% |
| Young Banded | 939 | 1198 | 1295 | 1627 | 1952 | 1356 | 1837 | 2108 | 2143 | 2134 | 1950 | 1770 | 1917 | 1484 | 1200 |
| % Banded | 77% | 80% | 84% | 88% | 81% | 83% | 86% | 84% | 90% | 83% | 96% | 84% | 90% | 85% | 80% |
| Young Fledged | 1051 | 1059 | 1201 | 1468 | 1715 | 1233 | 1640 | 1878 | 1731 | 1958 | 1796 | 1618 | 1729 | 1394 | 1086 |
| % Fledged | 86% | 71% | 78% | 79% | 71% | 76% | 76% | 75% | 73% | 76% | 89% | 76% | 81% | 80% | 72% |
| Available Boxes | 848 | 1114 | 1200 | 1544 | 1725 | 1780 | 1743 | 1683 | 1706 | 1608 | 1436 | 1362 | 1140 | 969 | 922 |
| Attempts as % of Available Boxes | 23% | 26% | 26% | 20% | 25% | 19% | 23% | 26% | 28% | 29% | 25% | 28% | 32% | 38% | 34% |
| Number of Routes | 31 | 39 | 60 | 82 | 83 | 80 | 78 | 77 | 81 | 75 | 65 | 60 | 51 | 45 | 45 |