For 2024, the forecasted civil government budget allocation for R&D in US space programs is $12.57 billion PPP, rising incrementally to $13.35 billion by 2028. In 2023, the budget stood at $12.37 billion, reflecting a steady increase. The year-on-year growth is anticipated to maintain an upward trend, projecting a consistent annual growth rate of approximately 1.5%. The compounded annual growth rate (CAGR) over the five-year forecast period is about 1.53%.

Future trends to watch for include:

Potential shifts in political priorities that could influence budget allocations.
Technological advancements necessitating increased R&D investments.
Influence of international competition in space exploration and its impact on US budget strategies.