Canon Lens Date Codes
A	2012, 1986, 1960
B	2013, 1987, 1961
C	2014, 1988, 1962
D	2015, 1989, 1963
E	2016, 1990, 1964
F	2017, 1991, 1965
G	2018, 1992, 1966
H	2019, 1993, 1967
I	2020, 1994, 1968
J	1995, 1969
K	1996, 1970
L	1997, 1971
M	1998, 1972
N	1999, 1973
O	2000, 1974
P	2001, 1975
Q	2002, 1976
R	2003, 1977
S	2004, 1978
T	2005, 1979
U	2006, 1980
V	2007, 1981
W	2008, 1982
X	2009, 1983
Y	2010, 1984
Z	2011, 1985