  | 
| Mean Wage History | 
| Year | This Occupation | Compared to Occupational Group | Difference | 
| Current | $27.95 |   | $27.07 | 
  | $0.88 | 
| 2015 | $27.30 | +2.4% | $26.44 | 
+2.4% | $0.86 | 
| 2014 | $26.71 | +2.2% | $25.87 | 
+2.2% | $0.84 | 
| 2013 | $26.30 | +1.5% | $25.48 | 
+1.5% | $0.83 | 
| 2012 | $26.08 | +.9% | $25.26 | 
+.9% | $0.82 | 
| 2011 | $25.70 | +1.5% | $24.89 | 
+1.5% | $0.81 | 
| 2010 | $25.40 | +1.2% | $24.60 | 
+1.2% | $0.80 | 
| 2009 | $25.13 | +1.1% | $24.34 | 
+1.1% | $0.79 | 
| 2008 | $24.30 | +3.4% | $23.53 | 
+3.4% | $0.77 | 
| 2007 | $23.37 | +4.0% | $22.64 | 
+4.0% | $0.74 | 
| Year | This Occupation | Compared to All Occupations | Difference | 
| Current | $27.95 |   | $20.85 | 
  | $7.10 | 
| 2015 | $27.30 | +2.4% | $20.27 | 
+2.9% | $7.03 | 
| 2014 | $26.71 | +2.2% | $19.83 | 
+2.2% | $6.88 | 
| 2013 | $26.30 | +1.5% | $19.43 | 
+2.1% | $6.87 | 
| 2012 | $26.08 | +.9% | $19.10 | 
+1.7% | $6.98 | 
| 2011 | $25.70 | +1.5% | $18.80 | 
+1.6% | $6.90 | 
| 2010 | $25.40 | +1.2% | $18.48 | 
+1.7% | $6.92 | 
| 2009 | $25.13 | +1.1% | $18.23 | 
+1.4% | $6.90 | 
| 2008 | $24.30 | +3.4% | $17.77 | 
+2.6% | $6.53 | 
| 2007 | $23.37 | +4.0% | $17.20 | 
+3.3% | $6.17 | 
  | 
| Reference Date: 1st Quarter 2016 |