Not sure I follow what you mean. Are you saying you get a 2% click rate (CTR) or only getting 2% of the share?
If you have a 2% CTR and want more, you need to have better ads and possibly tighten your keywords, although with a QS of 10, your keywords are obviously relevant.
I think you mean getting to show your ads more often (impression share). If so, is it because of budget? That would be a simple fix: increase your budget.