I don't understand the Tech Regulation chart [0]. What does the y-axis represent? [0] https://images.squarespace-cdn.com/content/v1/50363cf324ac8e905e7df861/15

I don't understand the Tech Regulation chart [0]. What does the y-axis represent? [0] https://images.squarespace-cdn.com/content/v1/50363cf324ac8e905e7df861/1595522011184-I19EHYNRIQ555ZPMZH5V/ke17ZwdGBToddI8pDm48kNvT88LknE-K9M4pGNO0Iqd7gQa3H78H3Y0txjaiv_0fDoOvxcdMmMKkDsyUqMSsMWxHk725yiiHCCLfrh8O1z5QPOohDIaIeljMHgDF5CVlOqpeNLcJ80NK65_fV7S1UbeDbaZv1s3QfpIA4TYnL5Qao8BosUKjCVjCf8TKewJIH3bqxw7fF48mhrq5Ulr0Hg/2020+Shoulders+of+Giants+1.1.088.png?format=2500w https://images.squarespace-cdn.com/content/v1/50363cf324ac8e...