Regarding the regulation of financial reporting, as established through the Securities Act of 1933, Securities Exchange Act of 1934, the Sarbanes-Oxley Act of 2002, and the Public Company Accounting Oversight Board (PCAOB) auditing standards effective December 31, 2016. Include a discussion of how the regulation of the accounting industry has changed since 1933 using these four regulations/standards as a timeline. (Please, add references.)