  | 
| Mean Wage History | 
| Year | This Occupation | Compared to Occupational Group | Difference | 
| Current | $13.77 |   | $15.55 | 
  | -$1.78 | 
| 2015 | $13.31 | +3.5% | $15.03 | 
+3.5% | -$1.72 | 
| 2014 | $13.01 | +2.3% | $14.69 | 
+2.3% | -$1.68 | 
| 2013 | $12.80 | +1.6% | $14.46 | 
+1.6% | -$1.65 | 
| 2012 | $12.50 | +2.4% | $14.12 | 
+2.4% | -$1.61 | 
| 2011 | $12.35 | +1.2% | $13.95 | 
+1.2% | -$1.59 | 
| 2010 | $12.12 | +1.9% | $13.69 | 
+1.9% | -$1.56 | 
| 2009 | $11.92 | +1.7% | $13.46 | 
+1.7% | -$1.54 | 
| 2008 | $11.60 | +2.8% | $13.10 | 
+2.8% | -$1.49 | 
| 2007 | $11.29 | +2.7% | $12.75 | 
+2.7% | -$1.45 | 
| Year | This Occupation | Compared to All Occupations | Difference | 
| Current | $13.77 |   | $23.35 | 
  | -$9.58 | 
| 2015 | $13.31 | +3.5% | $22.70 | 
+2.9% | -$9.38 | 
| 2014 | $13.01 | +2.3% | $22.21 | 
+2.2% | -$9.20 | 
| 2013 | $12.80 | +1.6% | $21.76 | 
+2.1% | -$8.96 | 
| 2012 | $12.50 | +2.4% | $21.39 | 
+1.7% | -$8.88 | 
| 2011 | $12.35 | +1.2% | $21.05 | 
+1.6% | -$8.70 | 
| 2010 | $12.12 | +1.9% | $20.70 | 
+1.7% | -$8.58 | 
| 2009 | $11.92 | +1.7% | $20.42 | 
+1.4% | -$8.49 | 
| 2008 | $11.60 | +2.8% | $19.90 | 
+2.6% | -$8.29 | 
| 2007 | $11.29 | +2.7% | $19.26 | 
+3.3% | -$7.96 | 
  | 
| Reference Date: 1st Quarter 2016 |