This map shows Muslim countries worth $1.0 trillion dollars or more by GDP (PPP). There are eight Muslim countries in the trillion dollar club. Indonesia is worth the most (2016).

Introduction:— One economic indicator of gauging how powerful economies are is by looking at their gross domestic product by purchasing power parity, or GDP (PPP). According to the World Bank, this is "the number of units of a country's currency required to buy the same amount of goods and services in the domestic market" compared to the United States market; based on the US dollar.[1] In other words, purchasing power parity takes into account the local differences in prices between countries and equalises them to the US economy. If a bottle of milk costs for instance $1.00 dollar in the US, but can be bought for $0.20 cents in Pakistan, then the Pakistani currency is worth five times ($5.00) as much as the official US dollar. It therefore follows that the cost of living in Pakistan would be cheaper compared to the US. Using this system, interestingly, Indonesia (which has a GDP (PPP) of $3.04 trillion dollars) is more of a powerful country than France ($2.71 trillion dollars) and the UK ($2.74 trillion dollars). It is also interestining to see that Turkey, a non-oil based economy, is worth $1.65 trillion dollars; which is almost the same as the oil-based Saudi Arabian economy (worth $1.74 trillion dollars). Additionally, it has also been found that the entire GDP (PPP) of the Muslim economies combined totals $17.60 trillion dollars. By 2020, China will be worth $28.23 trillion dollars and the Muslim world worth $22.9 trillion dollars.[2]