Citizen Science – Annual Bighorn Sheep Count Sheep Count (by year) Click on the dates by year below in order to download the full report. 2018200619941982 2017200519931981 2016200419921980 2015200319911979 2014200219901978 2013200119891977 2012200019881976 2011199919871975 2010199819861974 2009199719851973 20202008199619841972 20192007199519831971