  | 
| Mean Wage History | 
| Year | This Occupation | Compared to Occupational Group | Difference | 
| Current | $13.90 |   | $17.86 | 
  | -$3.96 | 
| 2015 | $13.46 | +3.3% | $17.29 | 
+3.3% | -$3.83 | 
| 2014 | $13.15 | +2.3% | $16.90 | 
+2.3% | -$3.74 | 
| 2013 | $12.91 | +1.9% | $16.58 | 
+1.9% | -$3.67 | 
| 2012 | $12.69 | +1.7% | $16.31 | 
+1.7% | -$3.61 | 
| 2011 | $12.49 | +1.6% | $16.04 | 
+1.6% | -$3.55 | 
| 2010 | $12.35 | +1.1% | $15.87 | 
+1.1% | -$3.51 | 
| 2009 | $12.14 | +1.8% | $15.59 | 
+1.8% | -$3.45 | 
| 2008 | $11.82 | +2.7% | $15.19 | 
+2.7% | -$3.36 | 
| 2007 | $11.55 | +2.3% | $14.84 | 
+2.3% | -$3.29 | 
| Year | This Occupation | Compared to All Occupations | Difference | 
| Current | $13.90 |   | $20.85 | 
  | -$6.95 | 
| 2015 | $13.46 | +3.3% | $20.27 | 
+2.9% | -$6.80 | 
| 2014 | $13.15 | +2.3% | $19.83 | 
+2.2% | -$6.67 | 
| 2013 | $12.91 | +1.9% | $19.43 | 
+2.1% | -$6.52 | 
| 2012 | $12.69 | +1.7% | $19.10 | 
+1.7% | -$6.40 | 
| 2011 | $12.49 | +1.6% | $18.80 | 
+1.6% | -$6.31 | 
| 2010 | $12.35 | +1.1% | $18.48 | 
+1.7% | -$6.13 | 
| 2009 | $12.14 | +1.8% | $18.23 | 
+1.4% | -$6.09 | 
| 2008 | $11.82 | +2.7% | $17.77 | 
+2.6% | -$5.94 | 
| 2007 | $11.55 | +2.3% | $17.20 | 
+3.3% | -$5.65 | 
  | 
| Reference Date: 1st Quarter 2016 |