| People | |
|---|---|
| 1988 | 150 |
| 1989 | 685 |
| 1990 | 2800 |
| 1991 | 2700 |
| 1992 | 3618 |
| 1993 | 5205 |
| 1994 | 4585 |
| 1995 | 5051 |
| 1996 | 6291 |
| 1997 | 9105 |
| 1998 | 10471 |
| 1999 | 9144 |
| 2000 | 10018 |
| 2001 | 7501 |
| 2002 | 10730 |
| 2003 | 10150 |
| 2004 | 7705 |
| 2005 | 10047 |
| 2006 | 10175 |
| 2007 | 9339 |
| 2008 | 9917 |
| 2009 | 10425 |
| 2010 | 9235 |
| 2011 | 6368 |
| 2012 | 5645 |
| 2013 | 5954 |
| 2014 | 6891 |
| 2015 | 7723 |
| 2016 | 6645 |
| 2017 | 5025 |
| 2018 | 7053 |
| Miles | |
|---|---|
| 1988 | 4.2 |
| 1989 | 8 |
| 1990 | 71 |
| 1991 | 142 |
| 1992 | 161 |
| 1993 | 261 |
| 1994 | 327.1 |
| 1995 | 228 |
| 1996 | 220.94 |
| 1997 | 286.87 |
| 1998 | 335 |
| 1999 | 287.3 |
| 2000 | 362.88 |
| 2001 | 329.7 |
| 2002 | 377.03 |
| 2003 | 424 |
| 2004 | 350 |
| 2005 | 481 |
| 2006 | 321 |
| 2007 | 677 |
| 2008 | 387 |
| 2009 | 325.81 |
| 2010 | 398 |
| 2011 | 262.18 |
| 2012 | 244.13 |
| 2013 | 173.25 |
| 2014 | 245.52 |
| 2015 | 250.21 |
| 2016 | 233.68 |
| 2017 | 191.58 |
| 2018 | 194.5 |
| Debris | |
|---|---|
| 1988 | 4560 |
| 1989 | 9497.5 |
| 1990 | 84000 |
| 1991 | 40000 |
| 1992 | 86269 |
| 1993 | 255486 |
| 1994 | 101258 |
| 1995 | 82007 |
| 1996 | 159840 |
| 1997 | 176383 |
| 1998 | 234199 |
| 1999 | 258484 |
| 2000 | 259900 |
| 2001 | 216544 |
| 2002 | 268623 |
| 2003 | 334421 |
| 2004 | 215513 |
| 2005 | 171592 |
| 2006 | 272157 |
| 2007 | 132243 |
| 2008 | 168856 |
| 2009 | 144837 |
| 2010 | 186582 |
| 2011 | 93644 |
| 2012 | 62633.55 |
| 2013 | 57604.98 |
| 2014 | 92677 |
| 2015 | 125544 |
| 2016 | 66830.98 |
| 2017 | 34548 |
| 2018 | 45311.29 |