INTEL 607

Rough Estimation:

Considering the complexity of precise calculations, a very rough estimate for the cumulative inflation-adjusted defense spending by NATO members since 1949 might be in the range of $40-50 trillion USD (in 2023 dollars). This is an approximation and could vary depending on exact historical data and inflation rates.

If you need a precise calculation, we would need access to a comprehensive database of annual defense spending and inflation rates, which could be analyzed computationally.