Bar charts are proportional to percentage, and scaled.

Publication Year	Count	Percent
1943	1	0.0
1944	0	0.0
1945	0	0.0
1946	0	0.0
1947	0	0.0
1948	1	0.0
1949	0	0.0
1950	4	0.0
1951	9	0.1
1952	35	0.4
1953	24	0.3
1954	43	0.5
1955	27	0.3
1956	44	0.5
1957	39	0.4
1958	54	0.6
1959	59	0.6
1960	83	0.9
1961	97	1.0
1962	109	1.2
1963	80	0.8
1964	112	1.2
1965	111	1.2
1966	93	1.0
1967	97	1.0
1968	128	1.4
1969	108	1.1
1970	105	1.1
1971	118	1.2
1972	140	1.5
1973	134	1.4
1974	149	1.6
1975	163	1.7
1976	212	2.2
1977	185	2.0
1978	222	2.4
1979	232	2.5
1980	229	2.4
1981	229	2.4
1982	258	2.7
1983	270	2.9
1984	254	2.7
1985	235	2.5
1986	216	2.3
1987	263	2.8
1988	217	2.3
1989	241	2.6
1990	229	2.4
1991	249	2.6
1992	242	2.6
1993	256	2.7
1994	212	2.2
1995	247	2.6
1996	259	2.7
1997	277	2.9
1998	277	2.9
1999	303	3.2
2000	279	3.0
2001	260	2.8
2002	288	3.0
2003	299	3.2
2004	269	2.8
2005	70	0.7

Items: 63