Excuse me, I'm quite new to the world of cryptocurrencies and I've been hearing a lot about Ripple lately. Could you possibly enlighten me on how many Ripple coins are currently in existence? I understand that the supply of coins can greatly influence their value and I'm quite interested in understanding the dynamics behind it. Also, if there's a limit to the total number of Ripple coins that can be mined or created, could you please elaborate on that as well? Thank you for your time and assistance.