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.
How Much Does a Diagnostic Medical Sonographer Make? A sonographer works closely with doctors and patients. The average median income for a sonographer, based on 2012 information, was $65,860.00 per year (according to the Bureau of Labor Statistics). These figures are only averages since sonographers may earn more in major hospitals and medical centers in large urban areas.