| Type | Count |
|---|---|
| 0 | |
| AFF | 12 |
| S/L | 42 |
| Tandem | 170 |
| Year | Count | Unspecified | Tandem | S/L | AFF |
|---|---|---|---|---|---|
| Undated | 14 | 2 | 7 | 4 | 1 |
| 1964 | 1 | 1 | |||
| 1966 | 1 | 1 | |||
| 1971 | 1 | 1 | |||
| 1972 | 1 | 1 | |||
| 1973 | 1 | 1 | |||
| 1974 | 2 | 2 | |||
| 1980 | 2 | 2 | |||
| 1982 | 6 | 6 | |||
| 1983 | 1 | 1 | |||
| 1985 | 6 | 6 | |||
| 1986 | 1 | 1 | |||
| 1987 | 3 | 3 | |||
| 1988 | 3 | 1 | 2 | ||
| 1989 | 5 | 2 | 3 | ||
| 1990 | 5 | 2 | 2 | 1 | |
| 1991 | 2 | 2 | |||
| 1992 | 5 | 4 | 1 | ||
| 1993 | 4 | 2 | 2 | ||
| 1994 | 5 | 1 | 2 | 2 | |
| 1995 | 7 | 3 | 4 | ||
| 1996 | 3 | 2 | 1 | ||
| 1997 | 4 | 3 | 1 | ||
| 1998 | 9 | 1 | 8 | ||
| 1999 | 9 | 7 | 2 | ||
| 2000 | 12 | 11 | 1 | ||
| 2001 | 45 | 2 | 43 | ||
| 2002 | 19 | 19 | |||
| 2003 | 17 | 16 | 1 | ||
| 2004 | 21 | 21 | |||
| 2005 | 6 | 6 | |||
| 2006 | 4 | 4 | |||
| 2007 | 1 | 1 | |||
| 2008 | 2 | 2 |
| State/Country | Count | Unspecified | Tandem | S/L | AFF |
|---|---|---|---|---|---|
| Alabama | 3 | 2 | 1 | ||
| Arizona | 5 | 5 | |||
| California | 42 | 36 | 4 | 2 | |
| Colorado | 1 | 1 | |||
| Delaware | 1 | 1 | |||
| Florida | 5 | 4 | 1 | ||
| Georgia | 5 | 5 | |||
| Hawaii | 3 | 3 | |||
| Idaho | 2 | 1 | 1 | ||
| Illinois | 4 | 3 | 1 | ||
| Maine | 2 | 2 | |||
| Maryland | 16 | 2 | 11 | 3 | |
| Michigan | 17 | 17 | |||
| Minnesota | 1 | 1 | |||
| Mississippi | 1 | 1 | |||
| Missouri | 2 | 2 | |||
| Nevada | 3 | 3 | |||
| New Jersey | 4 | 3 | 1 | ||
| New York | 14 | 10 | 4 | ||
| North Carolina | 1 | 1 | |||
| Ohio | 3 | 2 | 1 | ||
| Oklahoma | 1 | 1 | |||
| Oregon | 3 | 2 | 1 | ||
| Pennsylvania | 22 | 20 | 1 | 1 | |
| South Carolina | 2 | 1 | 1 | ||
| Texas | 20 | 16 | 1 | 3 | |
| Utah | 4 | 4 | |||
| Virginia | 16 | 15 | 1 | ||
| Washington | 3 | 1 | 2 | ||
| Wisconsin | 2 | 1 | 1 | ||
| United Kingdom | 12 | 5 | 7 | ||
| Germany | 4 | 2 | 1 | 1 | |
| New Zealand | 2 | 1 | 1 | ||
| Japan | 1 | 1 | |||
| Namibia | 1 | 1 |