No, If you follow the Graph from UAH, a natural El Nino event occurred in
1998, before that the temperature had normal ups and down. Actually The Sun was in a Solar Grand Maximum cycle that produced lots of sunspots, higher levels of TSI and low galactic cosmic ray flux.
After 1998 the temperature dipped then remained stable till 2010, when another Natural El Nino event occurred, evidenced by another spike in the graph. In 2003, the Solar Grand Maximum cycle ended and in 2009 a predicted Solar Grand Minimum cycle started. Temperatures dipped again after 2010 for a short period before another El Nino event occurred in 2016 and since then the temperatures are trending down as the Solar Grand Minimum intensifies, with sunspots and TSI at 200 year low and Galactic Cosmic Ray flux up 18%.
These events are all controlled by the Sun, Galactic Cosmic ray flux, natural variances and planetary mechanics.