Here is the graph showing the staked tokens and their impact on price changes for Cardano (ADA), Polkadot (DOT), and Solana (SOL) over the past 12 months.

Brief Conclusion:
- Cardano: The increase in staked tokens is accompanied by a 13% price rise, indicating stable demand for staking and support for the tokenomics.
- Polkadot: Staking DOT has resulted in a 14% price increase, highlighting the effectiveness of governance participation through staking.
- Solana: Staking in Solana has also led to a 14.5% price increase, demonstrating strong demand for the network.