| Year | Answer | % Correct |
|---|---|---|
| 1988 | MP4-4 | 84%
|
| 2022 | MCL36 | 82%
|
| 2020 | MCL35 | 81%
|
| 2024 | MCL38 | 81%
|
| 1989 | MP4-5 | 81%
|
| 1991 | MP4-6 | 81%
|
| 1981 | M29F/MP4-1 | 79%
|
| 2019 | MCL34 | 79%
|
| 2017 | MCL32 | 77%
|
| 2018 | MCL33 | 76%
|
| 1984 | MP4-2 | 76%
|
| 1993 | MP4-8 | 76%
|
| 1987 | MP4-3 | 74%
|
| 1994 | MP4-9 | 74%
|
| 1990 | MP4-5B | 71%
|
| 1995 | MP4-10/MP4-10B/MP4-10C | 69%
|
| 1997 | MP4-12 | 69%
|
| 2010 | MP4-25 | 69%
|
| 1996 | MP4-11/MP4-11B | 68%
|
| 1998 | MP4-13 | 68%
|
| 1999 | MP4-14 | 68%
|
| 2000 | MP4-15 | 68%
|
| 2001 | MP4-16 | 68%
|
| 2002 | MP4-17 | 68%
|
| 2004 | MP4-19/MP4-19B | 68%
|
| 2005 | MP4-20 | 68%
|
| 2006 | MP4-21 | 68%
|
| 2007 | MP4-22 | 68%
|
| 2008 | MP4-23 | 68%
|
| 2011 | MP4-26 | 68%
|
| 2013 | MP4-28 | 68%
|
| 2014 | MP4-29 | 68%
|
| 2015 | MP4-30 | 68%
|
| 2016 | MP4-31 | 68%
|
| 1992 | MP4-6B/MP4-7A | 68%
|
| 2009 | MP4-24 | 66%
|
| 2012 | MP4-27 | 66%
|
| 1985 | MP4-2B | 66%
|
| 1986 | MP4-2C | 65%
|
| 2023 | MCL60 | 63%
|
| 1982 | MP4-1B | 56%
|
| 1979 | M26/M28/M28B/M28C/M29 | 55%
|
| 1983 | MP4-1C/MP4-1E | 55%
|
| 1976 | M23/M26 | 50%
|
| 1977 | M23/M26 | 50%
|
| 1973 | M19A/M19C/M23 | 47%
|
| 1974 | M23 | 47%
|
| 1975 | M23 | 47%
|
| 2003 | MP4-17D | 47%
|
| 1978 | M26 | 44%
|
| 1980 | M29B/M29C/M30 | 40%
|
| 2021 | MCL35M | 35%
|
| 1969 | M7A/M7B/M7C/M9A | 29%
|
| 1967 | M4B/M5A | 27%
|
| 1968 | M5A/M7A | 27%
|
| 1970 | M7D/M14A/M14D | 24%
|
| 1971 | M14A/M19A | 23%
|
| 1972 | M19A/M19C | 23%
|
| 1966 | M2B | 23%
|