From http://www.bbc.co.uk/news/uk-england-london-27606195

Passenger numbers on the Tube have reached a record high - with an average
of 3.5 million travellers a day in 2013/14, according to new figures.

London Underground (LU) said 1.265 billion passengers took Tube journeys in
2013/14 - a 3% rise on 2012/13.

Numbers have increased by 33% since 2004, with LU operating an extra
373,000 miles of services in 2013/14 and running more trains that ever.

A transport watchdog said overcrowding was a big concern for commuters.

London TravelWatch said the large rise was unsurprising and more needed to
be done to improve journeys.

Chief executive Janet Cooke said: "We know from our research that
overcrowding is the major cause of dissatisfaction amongst commuters who
use the Underground, so it is essential that Transport for London continue
to invest in increasing capacity so that passengers can travel in more
comfort."

Since 2004 delays to customers also dropped by 54%, LU said.

LU said asset failures, which include signal problems or track faults, fell
to their lowest level in 2013/14.

Mayor of London Boris Johnson said: "Thanks to vital investment and a
programme of modernisation we've seen delays cut and more frequent and
reliable trains that enable Londoners to get to where they want to go more
quickly."

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It's interesting that the numbers have already overtaken 2012, the Olympics
year. Roll on the extra trains on the Jubilee and Northern lines, and new
signalling to increase the frequency. It does suggest that Crossrail will
indeed fill up soon after opening.