데이터 표
| 2000 | 19.6% | 2009 | 19.9% | 2018 | 19% |
| 2001 | 18.8% | 2010 | 21% | 2019 | 19.5% |
| 2002 | 18.2% | 2011 | 21.8% | 2020 | 17.5% |
| 2003 | 18.5% | 2012 | 22.4% | 2021 | 20.6% |
| 2004 | 18.5% | 2013 | 22.2% | 2022 | 21.7% |
| 2005 | 19.9% | 2014 | 22.2% | 2023 | 19.3% |
| 2006 | 21.2% | 2015 | 20% | 2024 | 18.7% |
| 2007 | 21.9% | 2016 | 18.4% | 2025 | 19.1% |
| 2008 | 22.4% | 2017 | 17.8% | 2026 | 19.4% |
데이터 표
| 2000 | 345억 | 2009 | 731억 | 2018 | 1,437억 |
| 2001 | 336억 | 2010 | 885억 | 2019 | 1,535억 |
| 2002 | 346억 | 2011 | 1,027억 | 2020 | 1,283억 |
| 2003 | 377억 | 2012 | 1,139억 | 2021 | 1,841억 |
| 2004 | 418억 | 2013 | 1,219억 | 2022 | 2,068억 |
| 2005 | 488억 | 2014 | 1,287억 | 2023 | 1,967억 |
| 2006 | 607억 | 2015 | 1,237억 | 2024 | 2,072억 |
| 2007 | 701억 | 2016 | 1,235억 | 2025 | 2,308억 |
| 2008 | 791억 | 2017 | 1,277억 | 2026 | 2,566억 |
데이터 표
| 2000 | 21.7% | 2009 | 21.3% | 2018 | 21% |
| 2001 | 20.9% | 2010 | 21% | 2019 | 20.8% |
| 2002 | 19.6% | 2011 | 19.8% | 2020 | 25.7% |
| 2003 | 20.1% | 2012 | 20.3% | 2021 | 23.1% |
| 2004 | 19.6% | 2013 | 21.5% | 2022 | 23.1% |
| 2005 | 20.4% | 2014 | 22.4% | 2023 | 22.1% |
| 2006 | 19.2% | 2015 | 22% | 2024 | 22.2% |
| 2007 | 18.6% | 2016 | 20.5% | 2025 | 21.4% |
| 2008 | 19.9% | 2017 | 20.6% | 2026 | 21.3% |
데이터 표
| 2000 | 382억 | 2009 | 786억 | 2018 | 1,584억 |
| 2001 | 375억 | 2010 | 886억 | 2019 | 1,642억 |
| 2002 | 373억 | 2011 | 930억 | 2020 | 1,884억 |
| 2003 | 410억 | 2012 | 1,034억 | 2021 | 2,063억 |
| 2004 | 441억 | 2013 | 1,177억 | 2022 | 2,200억 |
| 2005 | 499억 | 2014 | 1,298억 | 2023 | 2,247억 |
| 2006 | 549억 | 2015 | 1,362억 | 2024 | 2,464억 |
| 2007 | 594억 | 2016 | 1,377억 | 2025 | 2,594억 |
| 2008 | 704억 | 2017 | 1,476억 | 2026 | 2,827억 |