These files are updates to the figures in chapter 2 of Dessler's Introduction to Modern Climate Change
The hottest years are:
2023 1.544294
2016 1.375294
2020 1.365294
2019 1.338294
2017 1.279294
2022 1.251294
2015 1.239294
2021 1.211294
2018 1.203294
2010 1.094294
These are in C and warming is relative to the 1850-1900 baseline. Values calculated from the Berkeley Earth data set.
If you look at the 2014-2023 period, the planet is 1.29C warmer than the 1850-1900 period.
If you want to know how extreme 2023 was compared to climate model predictions, read this.