The Stockholm International Peace Research Institute (SIPRI) published their 2018 yearbook today.
From the SIPRI Website:
Key findings include the following: all the nuclear weapon-possessing states are developing new nuclear weapon systems and modernizing their existing systems; and the number of personnel deployed with peace operations worldwide continues to fall while the demand is increasing.
Three major SIPRI Yearbook 2018 data sets were pre-launched in 2017–18: the top 100 arms-producing companies (11 December 2017), international arms transfers (12 March 2018) and world military expenditure (2 May 2018).
Access to the full text of SIPRI Yearbook is fee-based.
However, a data-rich 24 page summary document is available at no charge.
Direct to Summary Document (PDF)