From the release:

The company conducted 756 audits spanning 30 countries and covering suppliers representing 95 percent of total spend. Apple’s efforts to raise standards are having a dramatic impact and the number of low-performing facilities decreased to just 1 percent.

Apple goes deeper into the supply chain to find issues and fix them more than any other company in its industry and each year it will do more to raise the bar and protect the people who make Apple products as well as the planet.

Indeed.