By "plenty" you mean roughly < 5% of the population. [1] https://thumbor.forbes.com/thumbor/960x0/https%3A%2F%2Fblogs-images.forbes.com%2Faparnamathur%2Ffiles%

By "plenty" you mean roughly < 5% of the population. [1] https://thumbor.forbes.com/thumbor/960x0/https%3A%2F%2Fblogs-images.forbes.com%2Faparnamathur%2Ffiles%2F2018%2F07%2FUS-inc.-mobility.jpg https://thumbor.forbes.com/thumbor/960x0/https%3A%2F%2Fblogs...