year,solo_founded_pct,source
2015,22.2,Carta
2016,23.0,Carta estimate
2017,23.5,Carta estimate
2018,23.5,Carta estimate
2019,23.7,Carta
2020,25.0,Carta estimate
2021,27.0,Carta estimate
2022,28.0,Carta estimate
2023,30.0,Carta
2024,31.0,Carta
2025,36.3,Carta mid-2025