I need to know two things:
1) Sabre reservations system was founded in 1960. I need to know what
percentage of total airline enplanements have gone through Sabre every
year for the past 45 years domestically. This can be given in a
percent or the actual number of enplanements that went through Sabre.
2) Online airline bookings came into effect in 1996. I need to know
since then what %age of domestic total bookings have occurred online
yearly. Again, this can be given as a % of total enplanements or
actual number of enplanements booked online.