What the data shows
The median platform in service with North Korea entered service in 1959; with Germany, in 2003. Counts weight the median, so a nation's fleets of older armoured vehicles pull it back more than a handful of new aircraft pull it forward.
12 of the 24 nations draw half or more of their active platforms from their own industry. China has the highest domestic share (97 per cent), Mexico the lowest (1 per cent). Across the 24, supplier concentration and domestic share move together (correlation 0.59): a nation that builds most of what it holds is, by construction, concentrated on one supplier, itself.
The modernisation ratio, platforms on order against platforms active, is highest for Germany (0.85) and Australia (0.26). On-order figures are the least complete of all: Wikipedia lists record few orders and SIPRI records orders only for imports.
Fleet age
Median year in service of active platforms, weighted by count, by nation (dot) and by domain. Nations ordered by their overall median.
LandSeaAirAll domains
Supplier concentration and domestic share
Each nation's Herfindahl index of the origin nations of its active platforms (1 means a single origin) against the share of those platforms made at home.
Modernisation ratio
Platforms on order against platforms active, by nation.
- Germany0.847
- Australia0.258
- Canada0.156
- Italy0.155
- South Africa0.096
- India0.056
- Taiwan0.056
- Japan0.053
- Indonesia0.050
- Brazil0.047
- South Korea0.027
- United Kingdom0.017
- France0.012
- United States0.010
- Russia0.004
- Israel0.003
- Ukraine0.002
- Türkiye0.001
- Argentina0.001
- Saudi Arabia0.000
- Mexico0.000
- China0.000
- Iran0.000
- North Korea0.000
Category coverage
Nations as rows, the categories as columns.
- None
- On order only
- Legacy only
- Modern
- Modern and on order
Modern: a platform that entered service in 1995 or later, or one of the current generations of fighters, tanks, submarines and long-range air defence.