Return Age Generation (i.e. Baby Boomer) from Date

gistfile1.txt

extension Date {    
    func ageGeneration() -> SPKAgeGeneration {
        let year = Calendar.current.component(.year, from: self)
        
        if year < 1927 {
            return .greatest
        } else if year < 1946 {
            return .silent
        } else if year < 1965 {
            return .boomer
        } else if year < 1981 {
            return .genX
        } else if year < 2001 {
            return .genY
        }
        return .genZ
    }
}

enum SPKAgeGeneration: String { //Ranges based on http://marketingartfully.com/2014/10/08/customer-demographics-age-ranges-numbers/
    case greatest = "Greatest Gen (1901 - 1926)"
    case silent = "Silent Gen (1927 - 1945)"
    case boomer = "Baby Boomers (1946 - 1964)"
    case genX = "Gen X (1965 - 1980)"
    case genY = "Gen Y (1981 - 2000)"
    case genZ = "Gen Z (2001 - 2017)"
}