Yes, it does, approximately 3 times that amount by weight, but that's not the whole story. You should consider other factors too in determining whether this means it is more harmful:
Firstly, when people smoke cannabis leaves or buds, they smoke them in a rolled cigarette which is usually larger than a tobacco cigarette. This would suggest that not only does cannabis smoke contain more tar, but that cannabis users inhale more smoke. In the outset, this seems worse.
Consider also, however, that cannabis smoking is often a social activity, and that people may not actually smoke much of a joint to themselves in the main. It may also be the case that cannabis smokers may not smoke as often as cigarette smokers. Both of these facts may suggest that cannabis users don't typically inhale as much tar overall, as actual amount of smoke inhaled could well be 1/3rd or less of the smoke inhalation of a regular smoker.
Equally, a portion of cannabis smokers will also smoke tobacco.
In considering the content of tar, you may also consider that low-tar cigarettes haven't be shown to actually reduce risk of cancer, and hasn't been shown to reduce emphysema either.
The basic conclusion of this is that yes, we know that cannabis smoke contains more tar, but we don't know that that makes it more harmful, nor do we know whether cannabis users actually inhale more tar, even though cannabis contains more. The answer to your question is yes, but whether or not the difference in tar content impacts health is undetermined.