I have 30 rasters showing the slope for 30 years and I am trying to create a time series animation by using animation tool. However I am trying to find a way for each year to be appeared during the animation. I can't enable the time of the layers (there is no "time" option in properties) and subsequently I can not enable the time slider. Is there anything else I could try for having the time step included in the animation? Thank you in advance.