@OP, You have already stated how you doubt the accuracy of the image you provide, but the honest truth is that Bitcoin can help with inflation.
LoyceV confirmed that the price of houses is correct according to index
The housing price is correct, based on the
House Price Index. But don't make the mistake of thinking you can extrapolate historic data with certainty: Bitcoin's price development wasn't certain in 2016, and it's not certain now.
Take, for example, when Bitcoin started in 2009, the first price for Bitcoin in the market was $0.0009, which was made possible by Martti Malmi according to history. Back then, if you had $1, you could purchase 1100+ bitcoins, but today, you will need $60+ to get a 0.0009 bitcoin fraction. Funny right? Who knows? In the future, BTC0.0009 might be worth $6k.
This has confirmed that there is inflation everywhere around the world. The rice of everything is going up when compared to some years back while the price of Bitcoin is going up as expected, this simply means that Bitcoin investment can save you from inflation. Therefore, instead of leaving your savings with bank, buy Bitcoin instead and stand a chance to buy what you wants to buy in the future because Bitcoin will store your value.