| Year | Number of sets | Total items | Total graded |
|---|---|---|---|
| Totals | 636 | 2,291 | 5,632 |
| 1948 | 1 | 5 | 6 |
| 1957-58 | 1 | 8 | 9 |
| 1961 | 1 | 1 | 1 |
| 1961-62 | 1 | 31 | 40 |
| 1963 | 1 | 5 | 5 |
| 1966-67 | 1 | 1 | 1 |
| 1969-70 | 1 | 10 | 11 |
| 1970-71 | 1 | 2 | 2 |
| 1971-72 | 1 | 6 | 7 |
| 1972-73 | 1 | 3 | 4 |
| 1973-74 | 1 | 2 | 3 |
| 1974-75 | 1 | 4 | 7 |
| 1975-76 | 1 | 6 | 17 |
| 1977-78 | 1 | 39 | 90 |
| 1978-79 | 1 | 3 | 3 |
| 1980-81 | 1 | 9 | 15 |
| 1981-82 | 1 | 11 | 16 |
| 1983 | 1 | 2 | 2 |
| 1983-84 | 1 | 1 | 1 |
| 1984 | 2 | 2 | 2 |
| 1984-85 | 1 | 2 | 2 |
| 1985 | 1 | 3 | 3 |
| 1985-86 | 1 | 1 | 1 |
| 1986 | 4 | 4 | 8 |
| 1986-87 | 5 | 30 | 201 |
| 1987-88 | 2 | 14 | 74 |
| 1988 | 1 | 1 | 1 |
| 1988-89 | 2 | 14 | 147 |
| 1989 | 3 | 9 | 27 |
| 1989-90 | 7 | 24 | 195 |
| 1990 | 5 | 5 | 8 |
| 1990-91 | 7 | 72 | 455 |
| 1991 | 8 | 21 | 232 |
| 1991-92 | 12 | 100 | 521 |
| 1992 | 11 | 25 | 42 |
| 1992-93 | 14 | 93 | 444 |
| 1993 | 6 | 7 | 8 |
| 1993-94 | 16 | 77 | 137 |
| 1994 | 14 | 26 | 76 |
| 1994-95 | 17 | 29 | 42 |
| 1995 | 4 | 4 | 6 |
| 1995-96 | 23 | 100 | 165 |
| 1996 | 8 | 13 | 20 |
| 1996-97 | 34 | 136 | 422 |
| 1996-98 | 1 | 1 | 1 |
| 1997 | 6 | 35 | 36 |
| 1997-98 | 29 | 115 | 151 |
| 1998 | 7 | 70 | 75 |
| 1998-99 | 35 | 183 | 255 |
| 1999 | 3 | 3 | 3 |
| 1999-00 | 24 | 61 | 68 |
| 2000 | 2 | 2 | 3 |
| 2000-01 | 13 | 25 | 29 |
| 2001 | 2 | 2 | 2 |
| 2001-02 | 11 | 14 | 18 |
| 2002 | 2 | 2 | 2 |
| 2002-03 | 13 | 22 | 23 |
| 2003 | 6 | 38 | 44 |
| 2003-04 | 37 | 114 | 272 |
| 2004 | 7 | 8 | 11 |
| 2004-05 | 13 | 21 | 31 |
| 2005-06 | 11 | 35 | 38 |
| 2006-07 | 8 | 21 | 23 |
| 2007 | 2 | 2 | 2 |
| 2007-08 | 8 | 13 | 18 |
| 2008 | 1 | 1 | 1 |
| 2008-09 | 7 | 13 | 16 |
| 2009 | 1 | 1 | 1 |
| 2009-10 | 8 | 15 | 19 |
| 2010-11 | 3 | 3 | 3 |
| 2011 | 1 | 1 | 1 |
| 2011-12 | 2 | 4 | 45 |
| 2012 | 4 | 5 | 7 |
| 2012-13 | 8 | 30 | 36 |
| 2013-14 | 4 | 4 | 5 |
| 2014 | 2 | 2 | 2 |
| 2014-15 | 4 | 10 | 11 |
| 2015-16 | 4 | 7 | 9 |
| 2016 | 1 | 1 | 3 |
| 2016-17 | 6 | 8 | 9 |
| 2017-18 | 5 | 7 | 8 |
| 2018-19 | 7 | 32 | 40 |
| 2019 | 4 | 5 | 5 |
| 2019-20 | 25 | 70 | 120 |
| 2020 | 4 | 8 | 8 |
| 2020-21 | 28 | 114 | 304 |
| 2021 | 4 | 6 | 6 |
| 2021-22 | 8 | 67 | 142 |
| 2022 | 1 | 2 | 2 |
| 2022-23 | 12 | 50 | 79 |
| 2023 | 2 | 2 | 2 |
| 2023-24 | 12 | 73 | 159 |
| 2024-25 | 1 | 2 | 5 |