Originally, I had data from
BrightLocal on SERP Clicks, which had the number at ~11.5% (PPC Only / No LSAs, Desktop + Mobile, 2018)
Then, we were looking at numbers that Rand Fishkin from his
Jumpshot / SparkToro research. That had Paid Ad Clicks as high as 11% of the clicks on a SERP (only specified "Paid", Mobile only, 2019). It also showed that percentage on a steady incline since 2016.
Then, there was
new data from SparkToro (based on SimilarWeb) that dropped that number WAY down to 0.79% ("Paid", Mobile only, 2020).
Now I am looking at the
SEMRush 2022 data, which has the number at 0.02% ("Paid", Mobile only, 2022).
During this same span of data, Desktop has also been decreasing, but not as much: 11.5% (merged 2018 data), 6.9% (2019), 2.8% (2020), and now 1.8% (2022). That is a clear downward trend, but not as much as mobile.
Even 0.8% to 0.02% is a huge drop. I know that we are looking at trillions of searches, and I'm not saying that's a small amount of clicks/ads served, but it just seems like the percentage of clicks on paid ads has dropped significantly.
So now I'm trying to make sure I am being logical about what I am looking at: does this indicate that more people are doing searches where ads aren't showing up? Because I don't feel (totally going off of feeling here, I know this isn't data) like the CTRs on Google Text Ads have gone down that much when looking at data in AdWords. So the first conclusion I jump to is that the percentage is shrinking because the amount of searches done overall has to be increasing, and the amount of times paid ads show up as an option might be decreasing?
Any insight people have would be helpful! Just want to be sure my understanding of what this data means is correct as I explain it.