"fifth hottest" is meaningless - is it warming or cooling?
If it was warming you'd expect to see the hottest.
What matters is the trend. Let's look at more numbers:
From the article:
2004, 2017: 19.3C
2013, 2014: 19.2C
2021: 19.1C
Is there are confusion about this? It's cooling, not "warming".