For Google search numbers, that would be different considering PDF searches in China wouldn't be done using Google. But perhaps taxes aren't done using PDFs either, that important detail I don't know.
The number of people filing taxes on a computer in India rounds to zero. For example, a quarter of India is illiterate. And 97+% of them don't make enough money to owe tax. And of the final 3%, many have someone else file for them. https://www.ibtimes.com/how-many-people-india-pay-income-tax....
Tax evasion as I know it, and as has been informed to me by many financial consultants I've talked to, is now increasingly difficult. You really need to have back-channel contacts with the right people and spectacular know-how of the loopholes to pull it off. I'm talking about large-scale evasion here, but much of it stands true for small-scale as well.
I believe the actual situation is 3% file for income tax and the majority of the rest don’t need to, but tax evasion is quite common there.
Well, no, because each is more than double the US population, and only half the US population files tax forms (2021 had 165 million individual filers, on 332 million US population.)