← All namesRiver
Raw counts
| Year | Count |
|---|
| 1990 | 7 |
| 1994 | 57 |
| 1995 | 5 |
| 1995 | 235 |
| 1996 | 244 |
| 1997 | 372 |
| 1998 | 452 |
| 1999 | 10 |
| 1999 | 352 |
| 2000 | 302 |
| 2001 | 14 |
| 2001 | 352 |
| 2002 | 284 |
| 2003 | 22 |
| 2003 | 383 |
| 2004 | 50 |
| 2004 | 425 |
| 2005 | 35 |
| 2005 | 491 |
| 2006 | 137 |
| 2006 | 548 |
| 2007 | 217 |
| 2007 | 410 |
| 2008 | 300 |
| 2008 | 647 |
| 2009 | 218 |
| 2009 | 666 |
| 2010 | 247 |
| 2010 | 680 |
| 2011 | 280 |
| 2011 | 640 |
| 2012 | 480 |
| 2012 | 822 |
| 2013 | 545 |
| 2013 | 948 |
| 2014 | 700 |
| 2014 | 1,417 |
| 2015 | 1,104 |
| 2015 | 2,049 |
| 2016 | 1,366 |
| 2016 | 2,502 |
| 2017 | 1,386 |
| 2017 | 2,564 |
| 2018 | 1,464 |
| 2018 | 2,798 |
| 2019 | 1,619 |
| 2019 | 3,096 |
| 2020 | 1,738 |
| 2020 | 3,125 |
| 2021 | 2,291 |
| 2021 | 4,120 |
| 2022 | 2,411 |
| 2022 | 4,105 |
| 2023 | 1,943 |
| 2023 | 3,431 |
| 2024 | 1,672 |
| 2024 | 3,546 |