=IF(M4955<=DATE(2014,6,30),0,IF(AND(M4955>=DATE(2014,7,1),M4955<=DATE(2015,6,30)),1,IF(AND(M4955>=DATE(2015,7,1),M4955<=DATE(2016,6,30)),2,IF(AND(M4955>=DATE(2016,7,1),M4955<=DATE(2018,6,30)),3,""))))