IF condition use in Excel

Age Changer

=IF(I2=2016, “2009”, IF(I2=2015, “2009”, IF(I2=2014,”2008″, IF(I2=2013, “2008”, IF(I2=2012, “2007”, IF(I2=2011, “2007”, IF(I2=2010, “2007”, IF(I2=2017,”2009″, IF(I2=2018, “2009”, IF(I2=2019, “2009”, IF(I2=2020, “2010”, I2)))))))))))