Apple has released its Supplier Responsibility report for 2016. The report, which Apple has released every year for the last decade, outlines how the company and its suppliers are treating the workers that make Apple products. It also details progress Apple has made in the area of environmental impact.

In 2015, Apple performed 640 audits of its supply chain, covering 1.6 million workers in 25 countries. This includes 140 first-time audits. The company saw 97% compliance with its weekly work hour standards, meaning that most workers throughout Apple's supply line worked no more than 60 hours per week. From Apple COO Jeff Williams:

In 2015, work-hour compliance among our suppliers reached 97 percent, a number that is virtually unheard of in our industry. Since 2008, more than 9.2 million workers have been trained on their rights, over 1.4 million people have participated in Apple educational programs, and more than US$25.6 million in excessive recruitment fees have been repaid to foreign contract workers by suppliers as a result of our efforts.

The company also says that it trained another 3 million workers on their rights, and graduated more than 1,000 students through its Supplier Employ Education and Development program (SEED) with associates and bachelors degrees.

On the environment, Apple saw reductions in carbon emissions by more than 13,800 metric tons. The supply chain also diverted more than 73,000 metric tons of waste away from landfills.

You can read the full report for a detailed breakdown of Apple's efforts in the last year.

Check out Apple's 2016 Supplier Responsibility report