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.
In 2013, the median salary for diagnostic medical sonographers was $66,410 per year, according to the BLS. However, the top 10% of sonographers made more than $88,000 annually. By upgrading your education, experience and job title, you can become a part of this top 10%.