| YEAR | LOW SNS | HIGH SNS | LOW z-score | HIGH z-score | Starting Price | Change in year |
| 2000 | 0 | 0 | 1 | 1 | 8.4375 | 4.375 |
| 2001 | 1 | 1 | 6 | 1 | 12.8125 | −3.6125 |
| 2002 | 0 | 1 | 1 | 1 | 9.2 | −0.3 |
| 2003 | 0 | 0 | 0 | 0 | 8.9 | 3.35 |
| 2004 | 0 | 0 | 0 | 1 | 12.25 | 4.75 |
| 2005 | 2 | 0 | 3 | 4 | 17 | 2.18 |
| 2006 | 2 | 2 | 3 | 2 | 19.18 | 5.38 |
| 2007 | 0 | 1 | 5 | 3 | 24.56 | −7.28 |
| 2008 | 3 | 1 | 4 | 3 | 17.28 | −9.55 |
| 2009 | 0 | 0 | 0 | 0 | 7.73 | 4.09 |
| 2010 | 0 | 0 | 0 | 0 | 11.82 | 6.53 |
| 2011 | 1 | 0 | 4 | 0 | 18.35 | −3.48 |
| 2012 | 0 | 0 | 0 | 0 | 14.87 | 1.27 |
| 2013 | 0 | 0 | 0 | 0 | 16.14 | 3.12 |
| 2014 | 1 | 0 | 1 | 0 | 19.26 | 4.55 |
| 2015 | 1 | 1 | 6 | 0 | 23.81 | −8.65 |
| 2016 | 0 | 2 | 3 | 2 | 15.16 | 3.97 |
| 2017 | 1 | 0 | 1 | 0 | 19.13 | 0.72 |
| TOTAL | 12 | 9 | 38 | 18 | 19.85 | (12/29/2017) |