| Year | Total | vs prev |
|---|---|---|
| 2023 | 0 | −100.0% |
| 2022 | 45 | −11.8% |
| 2021 | 51 | +34.2% |
| 2020 | 38 | +18.8% |
| 2019 | 32 | +52.4% |
| 2018 | 21 | −12.5% |
| 2017 | 24 | +41.2% |
| 2016 | 17 | −10.5% |
| 2015 | 19 | −34.5% |
| 2014 | 29 | +38.1% |
| 2013 | 21 | +950.0% |
| 2012 | 2 | −83.3% |
| 2011 | 12 | +9.1% |
| 2010 | 11 | — |
| 2009 | 11 | −21.4% |
| 2008 | 14 | −53.3% |
| 2007 | 30 | +20.0% |
| 2006 | 25 | −10.7% |
| 2005 | 28 | +133.3% |
| 2004 | 12 | — |
| 2003 | 0 | −100.0% |
| 2002 | 2 | −66.7% |
| 2001 | 6 | — |