2015: received 3 BTC
2016: received 1 BTC
2017: received 1 BTC
2018: sent 1 BTC
2019: received 2 BTC
In this case the number is 7 BTC
Do you know any online service which can do such sort of calculations?
Step 2, in search type in the address you want to check transaction history for. In this example I typed in "Bitcoin Address" in google and copy/pasted the first one I found. 1F1tAaz5x1HUXrCNLbtMDqcw6o5GNn4xqX
Step 3, Click on BTC address (unless you want to check the BCH) and you will get https://www.blockchain.com/btc/address/1F1tAaz5x1HUXrCNLbtMD...
Now if someone has a wallet and is constantly changing addresses with each transaction, that is something that I am unfamiliar with as I don't buy/hide stuff online with BTC.