Table 1.1 of the 2008 edition of Transport Statistics Great Britain shows the following levels of passenger kilometres travelled by rail in each year since 1979:
Year1 Billion passenger kilometres2 1979 35 1980 35 1981 34 1982 31 1983 34 1984 35 1985 36 1986 37 1987 39 1988 41 1989 39 1990 40 1991 39 1992 38 1993 37 1994 35 1995 37 1996 39 1997 42 1998 44 1999 46 2000 47 2001 47 2002 48 2003 49 2004 50 2005 52 2006 55 2007 59 1 Rail data are recorded in financial years. 2 1 kilometre = 0.6214 mile.
‘Transport Statistics Great Britain 2008 Edition’ is available on the Department for Transport website at the following link:
http://www.dft.gov.uk/pgr/statistics/datatablespublications/tsgb/2008edition/