| Year | Number | Gross | Average |
| 1968 | 39 | $28,119 | $721 |
| 1969 | 59 | $45,902 | $778 |
| 1970 | 40 | $30,320 | $758 |
| 1971 | 39 | $33,618 | $862 |
| 1972 | 39 | $37,986 | $974 |
| 1973 | 34 | $34,068 | $1,002 |
| 1975 | 39 | $40,638 | $1,042 |
| 1976 | 56 | $52,696 | $941 |
| 1977 | 49 | $46,011 | $939 |
| 1978 | 55 | $59,070 | $1,074 |
| 1979 | 49 | $103,025 | $2,103 |
| 1980 | 100 | $168,300 | $1,683 |
| 1981 | 127 | $207,772 | $1,636 |
| 1982 | 134 | $177,014 | $1,321 |
| 1983 | 102 | $158,610 | $1,555 |
| 1984 | 127 | $159,900 | $1,259 |
| 1985 | 103 | $131,737 | $1,279 |
| 1986 | 111 | $126,651 | $1,141 |
| 1987 | 98 | $142,100 | $1,450 |
| 1988 | 132 | $216,524 | $1,628 |
| 1989 | 192 | $306,624 | $1,597 |
| 1990 | 150 | $270,300 | $1,802 |
| 1991 | 172 | $304,275 | $1,769 |
| 1992 | 165 | $286,750 | $1,738 |
| 1993 | 178 | $254,780 | $1,431 |
| 1994 | 108 | $231,550 | $2,124 |
| 1995 | 154 | $264,450 | $1,717 |
| 1996 | 155 | $234,950 | $1,516 |
| 1997 | 133 | $195,875 | $1,473 |
| 1998 | 119 | $192,850 | $1,621 |
| 1999 | 114 | $179,625 | $1,576 |
| 2000 | 127 | $219,050 | $1,725 |
| 2001 | 114 | $192,275 | $1,687 |
| 2002 | 104 | $186,850 | $1,797 |
| 2003 | 105 | $185,850 | $1,770 |
| 2004 | 104 | $230,700 | $2,218 |
| 2005 | 95 | $252,600 | $2,659 |
| 2006 | 111 | $245,300 | $2,210 |
| 2007 | 97 | $210,200 | $2,074 |
| 2008 | 80 | $203,600 | $2,545 |
| 2009 | 78 | $184,925 | $2,371 |
| 2010 | 80 | $201,400 | $2,518 |
| 2011 | 77 | $229,450 | $2,980 |
| 2012 | 77 | $265,275 | $3,445 |
| 2013 | 67 | $191,750 | $2,862 |
| 2014 | 51 | $195,850 | $3,840 |
| 2015 | 52 | $236,000 | $4,538 |
| 2016 | 45 | $184,900 | $4,109 |
| 2017 | 54 | $183,600 | $3,400 |
| 2018 | 50 | $193,650 | $3,873 |
| 2019 | 48 | $180,350 | $3,757 |
| TOTALS | 4788 | $8,895,665 | $1,939 |
Office - (217)-430-7030