When was Rodger Federer's last Australian Open?
2018
2018
2018
2018
2018
2018
2021
2018
2019
2021
2016
2018
2019
2016
2018
2021
2019
2016
2018
2021
2019
2016
2018
2019
2017
2021
2016
2018
2015
2019
2014
2017
2016
2018
2021
2015
2019
2014
2017
2016
2018
2015
2021
2019
2014
2017
2016
2018
2015
2019
2014
2017
2021
2016
2018
2015
2019
2014
2017
2016
2018
2021
2015
2019
2014
2017
2016
2018
2015
2021
2019
2014
2017
2013
2016
2018
2015
2019
2014
2017
2021
2013
2016
2018
2015
2019
2022
2014
2023
2017
2013
2016
2018
2021
2015
2019
2014
2017
2013
2022
2023
2016
2020
2015
2010
2021
2019
2014
2017
2013
2012
2024
2016
2020
2015
2010
2022
2023
2019
2014
2017
2021
2013
2008
2012
2016
2020
2015
2010
2024
2019
2022
2014
2023
2017
2013
2008
2011
2012
2016
2021
2020
2015
2010
2019
2014
2024
2017
2013
2022
2008
2011
2012
2023
2016
2020
2009
2015
2010
2021
2019
2014
2017
2013
2008
2011
2012
2024
2016
2020
2009
2015
2010
2022
2026
2023
2014
2017
2021
2013
2008
2011
2012
2020
2009
2015
2010
2024
2022
2014
2026
2023
2017
2013
2008
2011
2012
2021
2020
2009
2015