18th Edition any time soon?

[Paul_C]

Year of issue of the various major editions and sub-editions:

1st - 1882
2nd - 1888
3rd - 1897
4th - 1903
5th - 1907
6th - 1911
7th - 1916
8th - 1924
9th - 1927
10th - 1934
11th - 1939
11th revised - 1943
12th - 1950
13th - 1955
14th - 1966
14th revised (metric) - 1970
15th - 1981
16th - 1992
17th - 2008

There were plenty of running amendments to some of those editions, of course.