Ask How many clicks per impression is good?

[Cupper]

Just of recent I noticed that my advert is moving slowly as leads are not coming to my mailing list. I started researching on what could have been the major causes of this I later discovered that the click by impression on my ads is a bit low. This is the reason why I make this post and put the question to you that how many clicks per impression should I aim for to know that my ads are performing well? I understand that this can vary depending on the industry and type of campaign, but I'd love to hear from others who've tracked this. Any tips on what's considered a good benchmark for clicks per impression would be great. Thanks