pandas.tseries.offsets.YearOffset.apply_index
- 
YearOffset.apply_index 
    © 2008–2012, AQR Capital Management, LLC, Lambda Foundry, Inc. and PyData Development Team
Licensed under the 3-clause BSD License.
    https://pandas.pydata.org/pandas-docs/version/0.24.2/reference/api/pandas.tseries.offsets.YearOffset.apply_index.html