Analyze the following tweet to determine the level of joy expressed. The levels are: 0: no joy can be inferred, 1: low amount of joy can be inferred, 2: moderate amount of joy can be inferred, 3: high amount of joy can be inferred.
Tweet: How pleasing is it to see the #Djokovic roar? He isn't at his stratospheric level but there are signs that he is going to reach there again.