8 in 1816 & 1820
16 in 1824 & 1828
21 in 1832, 1836 & 1840
23 from 1844 through 1860
21 in 1864 & 1868
22 in 1872, 1876 & 1880
23 from 1884 through 1908
24 from 1912 through 1928
26 in 1932, 1936 & 1940
26 in 1964 & 1968
25 in 1972, 1976 & 1980
23 in 1984 & 1988
21 in 1992, 1996 & 2000
20 in 2004 & 2008
18 in 2012, 2016 & 2020
25 from 1944 through 1960