date       RIR       IPv4 adoption   IPv6 adoption
20211201   ripencc    0.5067          0.3314
20211201   arin       0.2317          0.2002
20211201   lacnic     0.3334          0.3995
20211201   afrinic    0.1737          0.0591
20211201   apnic      0.2115          0.1500