The following table shows the estimated number of millionaire households (households with a net worth of at least $1 million, not including primary residence) in a certain country for selected years.
Year Millionaire Households
2015 9,200,000
2016 9,350,000
2017 9,620,000
2018 9,970,000
If the percentage increase between 2017 and 2018 continued for 2018 and 2019, how many millionaire households would there be in 2019? Round to the nearest ten thousand.
