데이터 표
| 1999 | 28.4% | 2009 | 26.3% | 2019 | 19.3% |
| 2000 | 27.3% | 2010 | 23.9% | 2020 | 18.2% |
| 2001 | 26.8% | 2011 | 20.9% | 2021 | 18.6% |
| 2002 | 24.2% | 2012 | 19.7% | 2022 | 19.2% |
| 2003 | 24.9% | 2013 | 20.6% | 2023 | 17% |
| 2004 | 24.4% | 2014 | 23.2% | 2024 | 15.8% |
| 2005 | 23.6% | 2015 | 20.9% | 2025 | 16.1% |
| 2006 | 27.2% | 2016 | 19.2% | 2026 | 16.6% |
| 2007 | 26.4% | 2017 | 20.7% | | |
| 2008 | 26.6% | 2018 | 19.7% | | |
데이터 표
| 1999 | 918억 | 2009 | 2,885억 | 2019 | 1.08조 |
| 2000 | 977억 | 2010 | 3,034억 | 2020 | 1.12조 |
| 2001 | 1,011억 | 2011 | 3,020억 | 2021 | 1.24조 |
| 2002 | 962억 | 2012 | 3,489억 | 2022 | 1.51조 |
| 2003 | 1,093억 | 2013 | 4,036억 | 2023 | 1.72조 |
| 2004 | 1,243억 | 2014 | 5,194억 | 2024 | 2.2조 |
| 2005 | 1,338억 | 2015 | 5,384억 | 2025 | 2.92조 |
| 2006 | 1,766억 | 2016 | 5,491억 | 2026 | 3.54조 |
| 2007 | 2,065억 | 2017 | 7,551억 | | |
| 2008 | 2,508억 | 2018 | 9,172억 | | |
데이터 표
| 1999 | 26.3% | 2009 | 32.5% | 2019 | 26.9% |
| 2000 | 26% | 2010 | 31.4% | 2020 | 25.7% |
| 2001 | 27.9% | 2011 | 30.5% | 2021 | 25.5% |
| 2002 | 30.9% | 2012 | 29.2% | 2022 | 24.9% |
| 2003 | 30.6% | 2013 | 32.9% | 2023 | 22.7% |
| 2004 | 30.1% | 2014 | 33.9% | 2024 | 22.9% |
| 2005 | 30.3% | 2015 | 31.3% | 2025 | 22.7% |
| 2006 | 34.5% | 2016 | 31% | 2026 | 28.8% |
| 2007 | 31.3% | 2017 | 30.6% | | |
| 2008 | 32.7% | 2018 | 28.6% | | |
데이터 표
| 1999 | 849억 | 2009 | 3,564억 | 2019 | 1.51조 |
| 2000 | 930억 | 2010 | 3,978억 | 2020 | 1.58조 |
| 2001 | 1,051억 | 2011 | 4,404억 | 2021 | 1.7조 |
| 2002 | 1,232억 | 2012 | 5,164억 | 2022 | 1.96조 |
| 2003 | 1,345억 | 2013 | 6,441억 | 2023 | 2.31조 |
| 2004 | 1,537억 | 2014 | 7,598억 | 2024 | 3.19조 |
| 2005 | 1,716억 | 2015 | 8,056억 | 2025 | 4.11조 |
| 2006 | 2,243억 | 2016 | 8,869억 | 2026 | 6.12조 |
| 2007 | 2,448억 | 2017 | 1.12조 | | |
| 2008 | 3,078억 | 2018 | 1.34조 | | |