| YEAR | TRACKS REPORTED |
|---|---|
| 2021 | 192 |
| 2020 | 960 |
| 2019 | 1631 |
| 2018 | 1542 |
| 2017 | 1548 |
| 2016 | 1602 |
| 2015 | 1450 |
| 2014 | 1485 |
| 2013 | 1487 |
| 2012 | 1347 |
| 2011 | 1430 |
| 2010 | 1562 |
| 2009 | 1881 |
| 2008 | 1763 |
| 2007 | 2024 |
| 2006 | 2166 |
| 2005 | 2043 |
| 2004 | 2019 |
| 2003 | 1864 |
| 2002 | 1613 |
| 2001 | 1428 |
| 2000 | 1547 |
| 1999 | 1348 |
| 1998 | 1475 |
| 1997 | 1188 |
| 1996 | 1330 |
| 1995 | 1221 |
| 1994 | 1088 |
| 1993 | 1022 |
| 1992 | 921 |
| 1991 | 1007 |
| 1990 | 998 |
| 1989 | 955 |
| 1988 | 883 |
| 1987 | 822 |
| 1986 | 695 |
| 1985 | 730 |
| 1984 | 680 |
| 1983 | 749 |
| 1982 | 690 |
| 1981 | 635 |
| 1980 | 590 |