| 2020 | 2021 | 183,900 | 2,230,100 | 2,414,000 | 0 | 183,900 | 2,230,100 | 2,414,000 |
| 2019 | 2020 | 156,300 | 2,151,700 | 2,308,000 | 0 | 156,300 | 2,151,700 | 2,308,000 |
| 2018 | 2019 | 133,300 | 1,648,700 | 1,782,000 | 0 | 133,300 | 1,648,700 | 1,782,000 |
| 2017 | 2018 | 133,300 | 1,533,700 | 1,667,000 | 0 | 133,300 | 1,533,700 | 1,667,000 |
| 2016 | 2017 | 91,900 | 1,343,100 | 1,435,000 | 0 | 91,900 | 1,343,100 | 1,435,000 |
| 2015 | 2016 | 110,300 | 1,146,700 | 1,257,000 | 0 | 110,300 | 1,146,700 | 1,257,000 |
| 2014 | 2015 | 110,300 | 1,059,700 | 1,170,000 | 0 | 110,300 | 1,059,700 | 1,170,000 |
| 2013 | 2014 | 80,000 | 1,031,000 | 1,111,000 | 0 | 80,000 | 1,031,000 | 1,111,000 |
| 2012 | 2013 | 85,000 | 961,000 | 1,046,000 | 0 | 85,000 | 961,000 | 1,046,000 |
| 2011 | 2012 | 85,000 | 949,000 | 1,034,000 | 0 | 85,000 | 949,000 | 1,034,000 |
| 2010 | 2011 | 91,900 | 942,100 | 1,034,000 | 0 | 91,900 | 942,100 | 1,034,000 |
| 2009 | 2010 | 82,700 | 951,300 | 1,034,000 | 0 | 82,700 | 951,300 | 1,034,000 |
| 2008 | 2009 | 82,700 | 1,294,300 | 1,377,000 | 0 | 82,700 | 1,294,300 | 1,377,000 |
| 2007 | 2008 | 82,500 | 1,182,500 | 1,265,000 | 0 | 82,500 | 1,182,500 | 1,265,000 |
| 2006 | 2007 | 82,600 | 1,121,400 | 1,204,000 | 0 | 82,600 | 1,121,400 | 1,204,000 |
| 2005 | 2006 | 55,100 | 1,036,900 | 1,092,000 | 0 | 55,100 | 1,036,900 | 1,092,000 |
| 2004 | 2005 | 45,900 | 838,100 | 884,000 | 0 | 45,900 | 838,100 | 884,000 |
| 2003 | 2004 | 45,900 | 1,014,100 | 1,060,000 | 0 | 45,900 | 1,014,100 | 1,060,000 |
| 2002 | 2003 | 45,900 | 729,100 | 775,000 | 0 | 45,900 | 729,100 | 775,000 |
| 2001 | 2002 | 46,000 | 729,000 | 775,000 | 0 | 46,000 | 729,000 | 775,000 |
| 2000 | 2001 | 46,000 | 729,000 | 775,000 | 0 | 46,000 | 729,000 | 775,000 |
| 1999 | 2000 | 46,000 | 459,000 | 505,000 | 0 | 46,000 | 459,000 | 505,000 |
| 1998 | 1999 | 46,000 | 459,000 | 505,000 | 0 | 46,000 | 459,000 | 505,000 |
| 1997 | 1998 | 0 | 0 | 0 | 0 | 46,000 | 504,400 | 550,400 |
| 1996 | 1997 | 0 | 0 | 0 | 0 | 39,100 | 456,800 | 495,900 |
| 1994 | 1995 | 0 | 0 | 0 | 0 | 39,100 | 456,800 | 495,900 |
| 1993 | 1994 | 0 | 0 | 0 | 0 | 36,700 | 426,500 | 463,200 |
| 1992 | 1993 | 0 | 0 | 0 | 0 | 36,700 | 426,500 | 463,200 |
| 1990 | 1991 | 0 | 0 | 0 | 0 | 32,100 | 381,300 | 413,400 |
| 1989 | 1990 | 0 | 0 | 0 | 0 | 32,000 | 370,900 | 402,900 |
| 1988 | 1989 | 0 | 0 | 0 | 0 | 32,000 | 500,000 | 532,000 |
| 1986 | 1987 | 0 | 0 | 0 | 0 | 18,400 | 428,500 | 446,900 |
| 1985 | 1986 | 0 | 0 | 0 | 0 | 18,400 | 428,500 | 446,900 |
| 1984 | 1985 | 0 | 0 | 0 | 0 | 18,400 | 428,500 | 446,900 |
| 1982 | 1983 | 0 | 0 | 0 | 0 | 21,800 | 400,500 | 422,300 |
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