TurboTax and the IRS only retain tax returns for the past seven years.
You may be able to get a Wage and Income transcript for tax year 2013 from the IRS - https://www.irs.gov/individuals/transcript-types-and-ways-to-order-them
If you cannot obtain the W-2 from your employer, then for a fee you can get a complete copy of a W-2 from the Social Security Administration - https://faq.ssa.gov/en-us/Topic/article/KA-02501
