  | 
| Mean Wage History | 
| Year | This Occupation | Compared to Occupational Group | Difference | 
| Current | $15.52 |   | $16.54 | 
  | -$1.02 | 
| 2015 | $15.00 | +3.5% | $15.98 | 
+3.5% | -$0.98 | 
| 2014 | $14.66 | +2.3% | $15.63 | 
+2.3% | -$0.96 | 
| 2013 | $14.43 | +1.6% | $15.38 | 
+1.6% | -$0.94 | 
| 2012 | $14.09 | +2.4% | $15.02 | 
+2.4% | -$0.92 | 
| 2011 | $13.92 | +1.2% | $14.83 | 
+1.2% | -$0.91 | 
| 2010 | $13.66 | +1.9% | $14.56 | 
+1.9% | -$0.89 | 
| 2009 | $13.44 | +1.7% | $14.32 | 
+1.7% | -$0.88 | 
| 2008 | $13.08 | +2.8% | $13.94 | 
+2.8% | -$0.85 | 
| 2007 | $12.73 | +2.7% | $13.57 | 
+2.7% | -$0.83 | 
| Year | This Occupation | Compared to All Occupations | Difference | 
| Current | $15.52 |   | $20.85 | 
  | -$5.33 | 
| 2015 | $15.00 | +3.5% | $20.27 | 
+2.9% | -$5.26 | 
| 2014 | $14.66 | +2.3% | $19.83 | 
+2.2% | -$5.16 | 
| 2013 | $14.43 | +1.6% | $19.43 | 
+2.1% | -$5.00 | 
| 2012 | $14.09 | +2.4% | $19.10 | 
+1.7% | -$5.00 | 
| 2011 | $13.92 | +1.2% | $18.80 | 
+1.6% | -$4.88 | 
| 2010 | $13.66 | +1.9% | $18.48 | 
+1.7% | -$4.82 | 
| 2009 | $13.44 | +1.7% | $18.23 | 
+1.4% | -$4.79 | 
| 2008 | $13.08 | +2.8% | $17.77 | 
+2.6% | -$4.69 | 
| 2007 | $12.73 | +2.7% | $17.20 | 
+3.3% | -$4.47 | 
  | 
| Reference Date: 1st Quarter 2016 |