Panel performance of several years

My system consists in a SolarEdge/SE7600A-US SolarEdge Inverter with per panel optimizers and 21 300 watt LG NEON2 Black/LG300N1K-G4 panels. I have now amassed six years of performance data on my Solar Power System from 2017 to 2022. I am pleased with the results of the choices I made for panels and inverter. This graph shows the actual energy produced compared to the estimated is in excess of the estimated based on a 0.1% loss in production per year of operation. The trend is significantly better production year over year improving (Blue curve) by about 2% each successive year. However, that may have more to do with weather than changes in panel efficiency. Whatever the causes it is good to see how well the system is performing.