SpamikazeWiki:

User agent %
Mozilla/5.0 71.61
PetalBot 7.56
DotBot/1.2 6.02
SemrushBot/3~bl 4.99
SemrushBot/2~bl 2.79
DotBot/1.1 1.85
SemrushBot/1.2~bl 0.50
MSIE 9.0 0.44
Thinkbot/0.5.8 0.35
BUbiNG 0.28
Others 3.63