We've worked with suppliers to build a strong system to detect and address forced and bonded labor in our supply chain. Our policies require no employee passports to be withheld and no fees charged to workers to obtain or keep their employment. To date, these policies have resulted in $3.5 million in fees returned by suppliers to workers.
Since 2008, we have worked extensively to develop responsible mineral-sourcing options for Intel and our industry. We're proud to have manufactured microprocessors that are conflict-free since 2013.
We remain diligent about minimizing our impact on the environment with our suppliers. We set expectations for greenhouse gas emission reporting and reduction, and we are proud to report that 96% of suppliers responded to a request to submit carbon footprint data. We're also working to implement a green chemical screening process to support safer alternatives.
We understand that working with a diverse supply chain brings increased innovation to our business and creates a more responsive and competitive supply base. In 2016, we spent $555 million with diverse suppliers, surpassing our goal of $400 million.
We believe assessments are an integral part of our management process and we audit 100% of high-risk supplier sites. Our audits follow Electronic Industry Citizenship Coalition (EICC) standards to identify compliance gaps for immediate action and future planning.
Review our supply chain policies in-depth and track our progress.