| Year | Total | YoY Change |
|---|---|---|
| 2000 | 7 | |
| 2003 | 3,790 | 54042.86% |
| 2004 | 11,357 | 199.66% |
| 2005 | 19,750 | 73.9% |
| 2006 | 31,773 | 60.88% |
| 2007 | 20,290 | -36.14% |
| 2008 | 12,059 | -40.57% |
| 2009 | 11,132 | -7.69% |
| 2010 | 9,316 | -16.31% |
| 2011 | 9,210 | -1.14% |
| 2012 | 7,564 | -17.87% |
| 2013 | 3,172 | -58.06% |
| 2014 | 13 | -99.59% |
| 2015 | 2 | -84.62% |
| 2017 | 2 | 0% |
| 2018 | 1 | -50% |
| 2019 | 1 | 0% |