| YEAR | TRACKS REPORTED |
|---|---|
| 2023 | 29 |
| 2022 | 1226 |
| 2021 | 1562 |
| 2020 | 1154 |
| 2019 | 1821 |
| 2018 | 1721 |
| 2017 | 1769 |
| 2016 | 1766 |
| 2015 | 1581 |
| 2014 | 1597 |
| 2013 | 1597 |
| 2012 | 1470 |
| 2011 | 1534 |
| 2010 | 1692 |
| 2009 | 2010 |
| 2008 | 1923 |
| 2007 | 2206 |
| 2006 | 2314 |
| 2005 | 2143 |
| 2004 | 2164 |
| 2003 | 1953 |
| 2002 | 1714 |
| 2001 | 1500 |
| 2000 | 1644 |
| 1999 | 1393 |
| 1998 | 1527 |
| 1997 | 1232 |
| 1996 | 1370 |
| 1995 | 1243 |
| 1994 | 1114 |
| 1993 | 1045 |
| 1992 | 939 |
| 1991 | 1024 |
| 1990 | 1027 |
| 1989 | 981 |
| 1988 | 914 |
| 1987 | 838 |
| 1986 | 720 |
| 1985 | 749 |
| 1984 | 705 |
| 1983 | 777 |
| 1982 | 712 |
| 1981 | 666 |
| 1980 | 615 |