Worldwide interest in Bitcoin and Cryptocurrencies - Last year to this week

Thought of doing a regular trends analysis of how the cryptocurrencies are perceived outside of the crypto land.

Search terms used:

1. Bitcoin
2. How to buy bitcoin
3. Cryptocurrency
4. Crypto
5. BTC

Past 12 months:

December ATH:

This week:

I've also tried some other search terms such as "blockchain", "bitcoin tax", and some variants of the above search terms like "cryptocurrencies" but so far I've found the above search terms more reliable.

Comment and let me know what search terms you think are better!