SIPRI Military Expenditure Database (v1.2)SIPRI 军费数据库（v1.2）

The SIPRI Military Expenditure Database reports national military spending from 1949 through 2025. Each row is a country-year and keeps four measures separate: millions of constant 2024 US dollars, millions of current US dollars, military spending as a percentage of GDP, and current-US-dollar spending per person (available from 1988). Missing or non-existent-country markers remain null, not zero. Redistribution or reproduction beyond SIPRI's stated fair-use threshold may require authorization; that risk is recorded separately from the completed technical workflow.

SIPRI 军费数据库记录 1949—2025 年各国军费。每行是一个国家—年度，并将四种口径严格分开：按 2024 年不变价计算的百万美元、当年现价百万美元、军费占 GDP 比例，以及按当年美元计算的人均军费（自 1988 年起）。缺失或国家尚不存在的标记转换为 null，而不是 0。由于复制超过 10% 需要 SIPRI 授权，本地输出仅供内部清洗和 QA。