The most important indicator of economic stability in the bitcoin market is the capitalization and not the price for 1 BTC. That is because of the constant emission of bitcoin, which is 54,000 BTC per month. So in order to maintain the current price of for 1 BTC one must buy bitcoins for every month. We can also say that even if the price for 1 BTC drops less than per month, the bitcoin capitalization grows.
Another aspect of the cryptocurrency economics are altcoins. Each altcoin creates an additional emission in the market and reduces price for 1 BTC. Unless altcoins existed, it could be assumed that more people would trade bitcoin. Then the current price for 1 BTC would be (by more).
In order to cover 95% of the market one should take into account the following cryptocoins: .
If one imagined the cryptocurrencies were in stock market, then in the S&P 500 rating (the top 500 largest companies by market capitalization listed on American stock exchanges) cryptocurrencies would be in the place.
Full list of altcoins used in calculations in alphabetical order (99 in total): 0x, Aeternity, Aion, Apollo Currency, Ardor, Ark, Augur, Aurora, Bancor, Basic Attention Token, Binance Coin, Bitcoin Cash, Bitcoin Diamond, Bitcoin Gold, Bitcoin SV, BitShares, Bytecoin, Bytom, Cardano, Chainlink, Crypto.com, Cryptonex, Dai, Dash, Decentraland, Decred, Dentacoin, DigiByte, DigixDAO, Dogecoin, Electroneum, EOS, Ethereum, Ethereum Classic, Factom, Gemini Dollar, Golem, GXChain, Holo, Huobi Token, HyperCash, ICON, Insight Chain, IOST, IOTA, Komodo, KuCoin Shares, Linkey, Lisk, Litecoin, Loopring, MaidSafeCoin, Maker, Mixin, MonaCoin, Monero, Nano, NEM, NEO, Nexo, ODEM, OmiseGO, Ontology, Paxos Standard Token, PayPie, PIVX, Polymath, Populous, Power Ledger, Project Pai, Pundi X, Qtum, Ravencoin, ReddCoin, REPO, Revain, XRP, Siacoin, STASIS EURS, Status, Steem, Stellar, Stratis, TenX, Tether, Tezos, THETA, TRON, TrueUSD, USD Coin, VeChain, Verge, Waltonchain, Wanchain, Waves, WAX, Zcash, Zcoin, Zilliqa, aggregate charts.