Improve the grammaticality of this sentence: The development in the field of economics has surprisingly contributed in easing the aging population.
The development of the field of economics has helped the population to be more productive.
The field of economics has helped the population to be more productive.
The field of economics has helped the population to be more productive.
The field of economics has helped the population to be more productive.
The field of economics has helped the population to be more productive.
The field of economics has helped the population to be more productive.
The field of economics has helped the population to be more productive.
The development of the field of economics has contributed to easing the aging population.
The field of economics has contributed to easing the aging population.
The field of economics has contributed to easing the aging population.
The field of economics has contributed to easing the aging population.
The field of economics has contributed to easing the aging population.
The field of economics has contributed to easing the aging population.
The field of economics has contributed to easing the aging population.
The field of economics has contributed