That stopped when the priests realized that most of the people couldn't actually use a quipu in that manner: the converts had to return to the quipu specialists to obtain a quipu and a list of sins that corresponded to the knots. After that, the Spanish worked to suppress the use of the quipu.
Average sonographer salary. An average hourly rate (wage) and the annual salary for sonographers in the United States is around $31.90 per hour and $66,360 per year.
Salary Ranges. The U.S. Bureau of Labor Statistics groups obstetric sonographers under the banner of diagnostic medical sonographers. Diagnostic medical sonographers earned median annual salaries of $65,860 in May 2012. The top 10 percent earned more than $91,070.The lowest 10 percent earned less than $44,990, and the lowest 25 percent earned less than $54,260, which are the salary ranges under which many entry-level sonographers would fall.he U.S. Bureau of Labor Statistics groups obstetric sonographers under the banner of diagnostic medical sonographers. Diagnostic medical sonographers earned median annual salaries of $65,860 in May 2012. The top 10 percent earned more than $91,070.