| Date |
1 oz. |
1/2 oz. |
1/4 oz. |
1/10 oz. |
1986 *
|
446,290 |
N/A |
N/A |
N/A |
1987 *
|
147,498 |
143,398 |
N/A |
N/A |
| 1988 |
87,133 |
76,528 |
98,028 |
143,881 |
| 1989 |
54,570 |
44,798 |
54,170 |
84,647 |
| 1990 |
62,401 |
51,636 |
62,674 |
99,349 |
| 1991 |
50,411 |
53,125 |
50,839 |
70,334 |
| 1992 |
44,826 |
40,976 |
46,269 |
64,874 |
| 1993 * |
34,369 |
43,819 |
46,464 |
58,649 |
| 1994 |
46,674 |
44,584 |
48,172 |
62,849 |
| 1995 * |
46,368 |
45,388 |
47,526 |
62,667 |
| 1996 |
36,153 |
35,058 |
38,219 |
57,047 |
| 1997 * |
32,999 |
26,344 |
29,805 |
34,977 |
| 1998 |
25,886 |
25,374 |
29,503 |
39,395 |
| 1999 |
31,427 |
30,427 |
34,417 |
48,428 |
| 2000 |
33,007 |
32,028 |
36,036 |
49,971 |
| 2001 |
24,555 |
23,240 |
25,613 |
37,530 |
| 2002 |
27,499 |
26,646 |
29,242 |
40,864 |
| 2003 |
28,344 |
28,270 |
30,292 |
40,027 |
| 2004 |
28,215 |
27,330 |
28,839 |
35,131 |
| 2005 |
35,246 |
34,311 |
37,207 |
49,265 |
| 2006 * |
47,092 |
34,322 |
36,127 |
47,277 |
| 2007 |
51,810 |
44,025 |
46,189 |
58,553 |
| 2008 |
30,237 |
22,602 |
18,877 |
28,116 |
| 2009* |
|
|
|
|
| 2010 |
59,480 |
44,527 |
44,507 |
54,285 |
| 2011 |
48,306 |
26,781 |
28,782 |
42,697 |
| 2012 |
23,630 |
12,809 |
13,775 |
20,740 |
| 2013* |
24,710 |
12,718 |
12,789 |
21,742 |