what are the names for the different age groups?
['Greatest Generation: pre-1928.', 'Traditionalists/ Silent Generation: 1928 - 1946.', 'Baby Boomers: 1946 - 1964.', 'Gen X: 1965 - 1976.', 'Gen Y / Millennials: 1977 - 1995.', 'Gen Z / iGen / Centennials 1995 - 2010.']