  | 
| Mean Wage History | 
| Year | This Occupation | Compared to Occupational Group | Difference | 
| Current | $17.56 |   | $25.99 | 
  | -$8.43 | 
| 2015 | $17.15 | +2.4% | $25.38 | 
+2.4% | -$8.23 | 
| 2014 | $16.78 | +2.2% | $24.84 | 
+2.2% | -$8.05 | 
| 2013 | $16.53 | +1.5% | $24.46 | 
+1.5% | -$7.93 | 
| 2012 | $16.38 | +.9% | $24.25 | 
+.9% | -$7.86 | 
| 2011 | $16.14 | +1.5% | $23.89 | 
+1.5% | -$7.75 | 
| 2010 | $15.96 | +1.2% | $23.62 | 
+1.2% | -$7.66 | 
| 2009 | $15.79 | +1.1% | $23.37 | 
+1.1% | -$7.58 | 
| 2008 | $15.27 | +3.4% | $22.59 | 
+3.4% | -$7.32 | 
| 2007 | $14.69 | +4.0% | $21.74 | 
+4.0% | -$7.04 | 
| Year | This Occupation | Compared to All Occupations | Difference | 
| Current | $17.56 |   | $23.35 | 
  | -$5.79 | 
| 2015 | $17.15 | +2.4% | $22.70 | 
+2.9% | -$5.54 | 
| 2014 | $16.78 | +2.2% | $22.21 | 
+2.2% | -$5.43 | 
| 2013 | $16.53 | +1.5% | $21.76 | 
+2.1% | -$5.23 | 
| 2012 | $16.38 | +.9% | $21.39 | 
+1.7% | -$5.00 | 
| 2011 | $16.14 | +1.5% | $21.05 | 
+1.6% | -$4.91 | 
| 2010 | $15.96 | +1.2% | $20.70 | 
+1.7% | -$4.73 | 
| 2009 | $15.79 | +1.1% | $20.42 | 
+1.4% | -$4.62 | 
| 2008 | $15.27 | +3.4% | $19.90 | 
+2.6% | -$4.63 | 
| 2007 | $14.69 | +4.0% | $19.26 | 
+3.3% | -$4.57 | 
  | 
| Reference Date: 1st Quarter 2016 |