Temperatures didn't peak in 1999 - the global average was higher in 2000, 2001, and at least 14 other years since, and only once since 1999 has there been more than a single year decline in that global average.
'Global warming' became 'climate change' because the purposely obtuse couldn't understand how the climate could be warming, and they could still get snow (or not grow mango trees apparently).
https://www.weather.gov/media/slc/ClimateBook/Annual%20Average%20Temperature%20By%20Year.pdf