The graphs show the proportion of spending on Research and Development in the GDP of countries, divided by regions and income levels, in 2017 and 2021. Summarise the information by selecting and reporting the main features and make comparisons where relevant. You should write about 150 words.

The provided bar charts delineate the percentage of Research and Development (R&D) expenditure as a proportion of Gross Domestic Product (GDP) across various regions and income levels for the years 2017 and 2021. Overall, there was a discernible increase in R&D spending percentage from 2017 to 2021, with significant variations between regions and income classifications. […]

The given bar charts depict the rate of expense on Research and Development in the GDP of different countries, categorized by regions and income levels, in two distinctive years, namely 2017 and 2021. Overall, it is clear that monetary allocation in the GDP of countries by region in 2021 accounted for the larger share than […]