The year of manufacture is the 10th digit of the VIN.

1971 = 1 1981 = B 1991 = M 2001 = 1
1972 = 2 1982 = C 1992 = N 2002 = 2
1973 = 3 1983 = D 1993 = P 2003 = 3
1974 = 4 1984 = E 1994 = R 2004 = 4
1975 = 5 1985 = F 1995 = S 2005 = 5
1976 = 6 1986 = G 1996 = T 2006 = 6
1977 = 7 1987 = H 1997 = V 2007 = 7
1978 = 8 1988 = J 1998 = W 2008 = 8
1979 = 9 1989 = K 1999 = X 2009 = 9
1980 = A 1990 = L 2000 = Y 2010 = A

(table borrowed from http://home.wxs.nl/~fransang/yearcode.html to save me time )