| # | Tier | Division | G | W | D | L | GF | GA | Pts | +- | ||
| 2005 | Major League Soccer Western Conference | 32 | 5 | 5 | 22 | 30 | 65 | 20 | -35 | |||
| 2006 | Major League Soccer Western Conference | 32 | 10 | 9 | 13 | 45 | 49 | 39 | -4 | |||
| 2007 | Major League Soccer Western Conference | 30 | 6 | 9 | 15 | 31 | 45 | 27 | -14 | |||
| 2008 | Major League Soccer Western Conference | 30 | 10 | 10 | 10 | 40 | 39 | 40 | 1 | |||
| 2009 | Major League Soccer Western Conference | 30 | 11 | 7 | 12 | 43 | 35 | 40 | 8 | Champions | ||
| 2010 | Major League Soccer Western Conference | 30 | 15 | 11 | 4 | 45 | 20 | 56 | 25 | |||
| 2011 | Major League Soccer Western Conference | 34 | 15 | 8 | 11 | 44 | 36 | 53 | 8 | |||
| 2012 | Major League Soccer Western Conference | 34 | 17 | 6 | 11 | 46 | 35 | 57 | 11 | |||
| 2013 | Major League Soccer Western Conference | 34 | 16 | 8 | 10 | 57 | 41 | 56 | 16 | |||
| 2014 | Major League Soccer Western Conference | 34 | 15 | 11 | 8 | 54 | 39 | 56 | 15 | |||
| 2015 | Major League Soccer Western Conference | 34 | 11 | 8 | 15 | 38 | 48 | 41 | -10 | |||
| 2016 | Major League Soccer Western Conference | 34 | 12 | 10 | 12 | 44 | 46 | 46 | -2 | |||
| 2017 | Major League Soccer Western Conference | 34 | 13 | 6 | 15 | 48 | 56 | 45 | -8 | |||
| 2018 | Major League Soccer Western Conference | 34 | 14 | 7 | 13 | 55 | 58 | 49 | -3 | |||
| 2019 | Major League Soccer Western Conference | 34 | 16 | 5 | 13 | 45 | 41 | 53 | 4 | |||
| 2020 | Major League Soccer Western Conference | 22 | 5 | 7 | 10 | 25 | 35 | 22 | -10 |