I am doing some additional research about Bitcoin, and I come across the link that talks many things about Bitcoin investment and launch. So I try to share with my fellow BitcoinTalk members, who have not gotten a full explanation about it before since they launched it in 2009.
The following site provides a longest Bitcoin price chart for you and I think you can not find anywhere else with a similar chart of Bitcoin price back to 2009-10-05.
https://bitcoin.zorinaq.com/price/If you want a more summary chart, use this one.
https://charts.bitbo.io/yearly-candles/If you want more details such as Bitcoin ROIs in months, quarters, years, you can use another following site
https://cryptorank.io/price/bitcoin/analytics