I use this for inflation: https://www.forbes.com/sites/andreamurphy/2017/10/18/the-price-of-the-good-life-the-forbes-400s-cost-of-living-extremely-well-index/#4

I use this for inflation: https://www.forbes.com/sites/andreamurphy/2017/10/18/the-price-of-the-good-life-the-forbes-400s-cost-of-living-extremely-well-index/#4c83403e32ad https://www.forbes.com/sites/andreamurphy/2017/10/18/the-pri... 5% avg inflation