The Institute of International Finance (IIF) has estimated that Iran�s economy will continue to grow by a modest rate of 3.5% this year if the country and world powers succeed in talks to revive a 2015 nuclear deal.

An IIF report published on Sunday said that Iran�s gross domestic product (GDP) will continue to grow� next year and in 2023 by 4.1% and 3.8%, respectively in case the nuclear deal, known as the JCPOA, is revived.

Iran and world powers have been engaged in rounds of talks in the Austrian capital Vienna since April as they seek to salvage the JCPOA more than three years after a former government in the United States pulled out of the agreement and reimposed sanctions on Tehran.

The IIF report estimated that Iran would continue to grapple with relatively high rates of joblessness even if the JCPOA is revived and US sanctions are lifted.

It admitted, however, that unemployment rate will decline from a current rate of 20%.

The report elaborated that an expanded nuclear deal between Iran and world powers would lead to a larger economic growth for Iran as it would cause the US to lift sanctions that are not related to the JCPOA.

It said under such scenario, Iran�s GDP would grow by 4.3% this year, and then by 5.9% and 5.8% in 2022 and 2023 respectively.