Ridership on the Metro North New Haven line for last year surpassed 40.3 million passenger trips.  That's up two percent from the prior year.  Metro North says it also sets an all-time record, making it the busiest commuter rail line in America.  Non-commuting discretionary ridership was up 2.9 percent over last year.  The Danbury branch had significant ridership growth of 9.4 percent.  The New Haven Line is owned by the State and is operated by Metro-North under contract to the state Department of Transportation.