Highest salary at Perth in year 2011 was $45,078. Number of employees at Perth in year 2011 was 15. Average annual salary was $23,788 and median salary was $28,000. Perth average salary is 49 percent lower than USA average and median salary is 36 percent lower than USA median salary. From 2010 to 2011, the average salary of employees at this employer increased 6.9 percent, the median salary increased 6.6 percent.