Military Spending Across the World

That the US outspends all countries hardly needs a mention, that it does so by a dizzyingly big amount, however, is always worth repeating: the US' current five-year average reported military expenditure is roughly equal to the combined five-year average spend of these eight countries:   

• China
• India
• Saudi Arabia
• Russia
• United Kingdom
• Germany
• Japan
• France
• South Korea
• Italy
• Australia
• Brazil

Keep in mind that the US also spends several billions per year on military building and development, support and equipment donations and aid to other countries, etc., all of these done through other budgetary categories or through closed or discretionary means that are not officially reported on per the public and published budget reports.

A surprising fact: The US has the world’s third-largest military. Active-duty service members are currently estimated to total 1.366 million with an additional 1.04 million in the National Guard and reserves.

Some interesting details (at first glance; a more in-depth analysis still to come):

• Currently, Afghanistan appears to be ramping up its military spending to absurd amounts; I've come across varying amounts for 2021 and 2022, one which puts its current-year military expenditure at 61.5% of it GDP. I've indicated the average of the data I pulled or of what is available publicly, but the high spend appears to be the more correct version—there's something happening there..  I'll attempt to get a definitive fix on those and reconfirm all other digits.
• NATO spending trend have all been following a general upward trend since 2017; only Turkey's hasn't. This is interesting when one considers its stance on the Ulraine-Russia war. Some major upticks worth looking into, such as Bulgaria in 2019.

NOTE THAT

• The totals given in the first table below (as well as the first one for NATO expenditures) are set at 2015 dollar value (constant 2015 value). 
• The total current 2022 dollar spend surpasses the $2 trillion, being at $2,234,148,986,820 ($1,992,996,420,000 @ constant 2015 value).

(More info, stats, and some maps to come; calculating various ratios to contrast military spending with other categories. Also trying to dig up operational, maintenance, personnel, and equipment (weapons) costs)