Share of new millennial-held mortgages 2018: 47% Share of new millennial-held mortgages 2017: 42% Year-over-year difference: 4.7%Share of new millennial-held mortgages 2018: 48% Share of new millennial-held mortgages 2017: 43% Year-over-year difference: 4.3%Share of new millennial-held mortgages 2018: 48% Share of new millennial-held mortgages 2017: 44% Year-over-year difference: 3.8%Share of new millennial-held mortgages 2018: 49% Share of new millennial-held mortgages 2017: 45% Year-over-year difference: 3.7%Share of new millennial-held mortgages 2018: 50% Share of new millennial-held mortgages 2017: 46% Year-over-year difference: 3.6%Share of new millennial-held mortgages 2018: 51% Share of new millennial-held mortgages 2017: 46% Year-over-year difference: 4.8%Share of new millennial-held mortgages 2018: 51% Share of new millennial-held mortgages 2017: 46% Year-over-year difference: 4.8%Share of new millennial-held mortgages 2018: 52% Share of new millennial-held mortgages 2017: 48% Year-over-year difference: 4.3%Share of new millennial-held mortgages 2018: 52% Share of new millennial-held mortgages 2017: 47% Year-over-year difference: 5.2%Share of new millennial-held mortgages 2018: 56% Share of new millennial-held mortgages 2017: 48% Year-over-year difference: 8.8%