表を表示
| 1997 | 31.9% | 2007 | 32% | 2017 | 29% |
| 1998 | 30.6% | 2008 | 32.8% | 2018 | 28.5% |
| 1999 | 32.5% | 2009 | 30.9% | 2019 | 29.4% |
| 2000 | 34.4% | 2010 | 30.1% | 2020 | 28.4% |
| 2001 | 31.5% | 2011 | 29.4% | 2021 | 30% |
| 2002 | 33% | 2012 | 29.4% | 2022 | 29.8% |
| 2003 | 35.9% | 2013 | 27.8% | 2023 | 30.7% |
| 2004 | 34.5% | 2014 | 27.5% | 2024 | 31.8% |
| 2005 | 32.7% | 2015 | 28.7% | 2025 | 32.2% |
| 2006 | 30.9% | 2016 | 28.4% | 2026 | 32% |
表を表示
| 1997 | 637億 | 2007 | 1,194億 | 2017 | 1,794億 |
| 1998 | 639億 | 2008 | 1,362億 | 2018 | 1,884億 |
| 1999 | 730億 | 2009 | 1,283億 | 2019 | 2,039億 |
| 2000 | 855億 | 2010 | 1,316億 | 2020 | 1,898億 |
| 2001 | 795億 | 2011 | 1,364億 | 2021 | 2,185億 |
| 2002 | 852億 | 2012 | 1,374億 | 2022 | 2,432億 |
| 2003 | 965億 | 2013 | 1,397億 | 2023 | 2,771億 |
| 2004 | 968億 | 2014 | 1,452億 | 2024 | 3,063億 |
| 2005 | 1,009億 | 2015 | 1,607億 | 2025 | 3,360億 |
| 2006 | 1,036億 | 2016 | 1,690億 | 2026 | 3,613億 |
表を表示
| 1997 | 32.3% | 2007 | 31.4% | 2017 | 31.8% |
| 1998 | 32.2% | 2008 | 33.8% | 2018 | 30.3% |
| 1999 | 32.5% | 2009 | 33.6% | 2019 | 31.4% |
| 2000 | 32% | 2010 | 32.5% | 2020 | 36.4% |
| 2001 | 37.4% | 2011 | 31.9% | 2021 | 35.3% |
| 2002 | 38.2% | 2012 | 33.3% | 2022 | 35% |
| 2003 | 36% | 2013 | 31.7% | 2023 | 35.3% |
| 2004 | 34.1% | 2014 | 31.7% | 2024 | 36.1% |
| 2005 | 32.5% | 2015 | 32.2% | 2025 | 36.2% |
| 2006 | 31.5% | 2016 | 31.1% | 2026 | 36.2% |
表を表示
| 1997 | 644億 | 2007 | 1,173億 | 2017 | 1,963億 |
| 1998 | 673億 | 2008 | 1,401億 | 2018 | 2,000億 |
| 1999 | 730億 | 2009 | 1,392億 | 2019 | 2,175億 |
| 2000 | 796億 | 2010 | 1,422億 | 2020 | 2,436億 |
| 2001 | 943億 | 2011 | 1,479億 | 2021 | 2,573億 |
| 2002 | 988億 | 2012 | 1,552億 | 2022 | 2,859億 |
| 2003 | 967億 | 2013 | 1,590億 | 2023 | 3,186億 |
| 2004 | 958億 | 2014 | 1,673億 | 2024 | 3,485億 |
| 2005 | 1,002億 | 2015 | 1,801億 | 2025 | 3,778億 |
| 2006 | 1,053億 | 2016 | 1,850億 | 2026 | 4,083億 |