A multinational corporation is implementing a new information governance framework to ensure compliance with various data protection regulations, including GDPR and HIPAA. The governance team is tasked with classifying data based on its sensitivity and regulatory requirements. They decide to categorize data into three levels: Public, Internal, and Confidential. The team also needs to establish retention policies for each category. If the corporation has 10,000 records classified as Confidential, and they determine that these records must be retained for a minimum of 7 years, how many records will need to be reviewed for compliance if they plan to review 20% of the Confidential records every year?