What do you consider the tech industry? Do you consider Wall St firms to be tech? Do you consider bigPharma to be tech? Do you consider FAANG to be tech?
Here's a link[0] with 2023 lobby spends by industry, but there is no "tech" listing specific. There's an entry for "Internet" listed, which I'm guessing is what you mean by "tech". Another chart[1] breaks down that entry.
If you want to know when each company started to spend money, you could research their public filings.