| Years | Dependent Variable | Independent Variable | |
| ETC | LOC | ||
| Null Hypothesis | Alternate Hypothesis | ||
| 1996 | 0 | 1 | 0 |
| 1997 | 0 | 0 | 0 |
| 1998 | 0 | 0 | 0 |
| 1999 | 0 | 1 | 1 |
| 2000 | 0 | 0 | 0 |
| 2001 | 0 | 0 | 0 |
| 2002 | 0 | 0 | 0 |
| 2003 | 0 | 2 | 2 |
| 2004 | 0 | 0 | 0 |
| 2005 | 0 | 1 | 1 |
| 2006 | 0 | 0 | 0 |
| 2007 | 0 | 1 | 1 |
| 2008 | 0 | 1 | 1 |
| 2009 | 0 | 0 | 0 |
| 2010 | 0 | 1 | 1 |
| 2011 | 0 | 5 | 5 |
| 2012 | 0 | 0 | 0 |
| 2013 | 0 | 2 | 2 |
| 2014 | 0 | 1 | 1 |
| 2015 | 1 | 1 | 2 |
| 2016 | 0 | 0 | 0 |
| 2017 | 1 | 4 | 5 |
| 2018 | 0 | 4 | 4 |
| 2019 | 0 | 3 | 3 |
| Total | 2 | 28 | 30 |