| 2017 | 2018 | 1,957,900 | 1,759,300 | 3,717,200 | 1,957,900 | 1,759,300 | 3,717,200 |
| 2016 | 2017 | 1,957,900 | 1,169,100 | 3,127,000 | 1,957,900 | 1,169,100 | 3,127,000 |
| 2015 | 2016 | 1,807,300 | 1,169,300 | 2,976,600 | 1,807,300 | 1,169,300 | 2,976,600 |
| 2014 | 2015 | 1,656,700 | 1,258,700 | 2,915,400 | 1,656,700 | 1,258,700 | 2,915,400 |
| 2013 | 2014 | 1,506,100 | 1,409,300 | 2,915,400 | 1,506,100 | 1,409,300 | 2,915,400 |
| 2012 | 2013 | 1,506,100 | 1,409,300 | 2,915,400 | 1,506,100 | 1,409,300 | 2,915,400 |
| 2011 | 2012 | 1,506,100 | 1,448,500 | 2,954,600 | 1,506,100 | 1,448,500 | 2,954,600 |
| 2010 | 2011 | 1,506,100 | 1,228,700 | 2,734,800 | 1,506,100 | 1,228,700 | 2,734,800 |
| 2009 | 2010 | 1,506,100 | 1,225,700 | 2,731,800 | 1,506,100 | 1,225,700 | 2,731,800 |
| 2008 | 2009 | 1,430,700 | 1,301,100 | 2,731,800 | 1,430,700 | 1,301,100 | 2,731,800 |
| 2007 | 2008 | 1,129,500 | 1,288,400 | 2,417,900 | 1,129,500 | 1,288,400 | 2,417,900 |
| 2006 | 2007 | 978,900 | 1,407,700 | 2,386,600 | 978,900 | 1,407,700 | 2,386,600 |
| 2005 | 2006 | 753,000 | 1,309,500 | 2,062,500 | 753,000 | 1,309,500 | 2,062,500 |
| 2004 | 2005 | 602,400 | 1,377,600 | 1,980,000 | 602,400 | 1,377,600 | 1,980,000 |
| 2003 | 2004 | 602,400 | 1,295,100 | 1,897,500 | 602,400 | 1,295,100 | 1,897,500 |
| 2002 | 2003 | 602,400 | 1,295,100 | 1,897,500 | 602,400 | 1,295,100 | 1,897,500 |
| 2001 | 2002 | 602,400 | 1,291,100 | 1,893,500 | 602,400 | 1,291,100 | 1,893,500 |
| 2000 | 2001 | 451,800 | 1,342,400 | 1,794,200 | 451,800 | 1,342,400 | 1,794,200 |
| 1999 | 2000 | 451,800 | 815,200 | 1,267,000 | 451,800 | 815,200 | 1,267,000 |
| 1998 | 1999 | 451,800 | 815,200 | 1,267,000 | 451,800 | 815,200 | 1,267,000 |
| 1997 | 1998 | 0 | 0 | 0 | 271,000 | 852,000 | 1,123,000 |
| 1996 | 1997 | 0 | 0 | 0 | 271,000 | 852,000 | 1,123,000 |
| 1995 | 1996 | 0 | 0 | 0 | 271,000 | 288,500 | 559,500 |
| 1994 | 1995 | 0 | 0 | 0 | 271,000 | 1,000 | 272,000 |
| 1992 | 1993 | 0 | 0 | 0 | 271,000 | 1,000 | 272,000 |
| 1990 | 1991 | 0 | 0 | 0 | 271,000 | 1,000 | 272,000 |
| 1989 | 1990 | 0 | 0 | 0 | 165,700 | 48,800 | 214,500 |
| 1988 | 1989 | 0 | 0 | 0 | 65,700 | 46,300 | 112,000 |
| 1986 | 1987 | 0 | 0 | 0 | 65,700 | 38,500 | 104,200 |
| 1984 | 1985 | 0 | 0 | 0 | 48,100 | 38,200 | 86,300 |
| 1982 | 1983 | 0 | 0 | 0 | 48,100 | 38,200 | 86,300 |
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