Looking For Information About How Much Each Productive Area Contributes To Country’s GDP

Hi, I’m currently working on a project for myself where I’m trying to get insights from different country’s aspects throughout the years: poverty, GDP, pop.

Right know I’m looking for a dataset that can provide which are the main activities the country gets its GDP from – example: Mining, agriculture, petrol production, industries, construction, fishing, etc.

Do you know of any reliable sources where I can get these? I know each individual country may have it’s own public information, but it is unstructured data and looking for it for all the countries in the different years (lets say the past 30) it’s more than 6180 individual searches I’d have to do, which is kind of impossible