데이터 표
| 1997 | 18.4% | 2007 | 26.1% | 2017 | 27.8% |
| 1998 | 26.8% | 2008 | 26.8% | 2018 | 27.1% |
| 1999 | 28.3% | 2009 | 26.1% | 2019 | 26.9% |
| 2000 | 26.1% | 2010 | 25.9% | 2020 | 25.7% |
| 2001 | 25.8% | 2011 | 25.4% | 2021 | 27.4% |
| 2002 | 25.3% | 2012 | 24.8% | 2022 | 26.6% |
| 2003 | 24.7% | 2013 | 24% | 2023 | 27.2% |
| 2004 | 25% | 2014 | 26.3% | 2024 | 28.2% |
| 2005 | 25.4% | 2015 | 26.4% | 2025 | 28.3% |
| 2006 | 25.9% | 2016 | 27.6% | 2026 | 29% |
데이터 표
| 1997 | 610억 | 2007 | 2,523억 | 2017 | 4,304억 |
| 1998 | 1,032억 | 2008 | 2,901억 | 2018 | 4,499억 |
| 1999 | 1,254억 | 2009 | 2,985억 | 2019 | 4,603억 |
| 2000 | 1,306억 | 2010 | 3,207억 | 2020 | 4,259억 |
| 2001 | 1,456억 | 2011 | 3,304억 | 2021 | 5,110억 |
| 2002 | 1,546억 | 2012 | 3,304억 | 2022 | 5,728억 |
| 2003 | 1,672억 | 2013 | 3,237억 | 2023 | 6,437억 |
| 2004 | 1,844억 | 2014 | 3,666억 | 2024 | 7,103억 |
| 2005 | 2,045억 | 2015 | 3,792억 | 2025 | 7,546억 |
| 2006 | 2,263억 | 2016 | 4,070억 | 2026 | 8,206억 |
데이터 표
| 1997 | 30.3% | 2007 | 29.3% | 2017 | 29.2% |
| 1998 | 36.8% | 2008 | 31.7% | 2018 | 28.7% |
| 1999 | 37.1% | 2009 | 32.7% | 2019 | 28.7% |
| 2000 | 33.8% | 2010 | 29.4% | 2020 | 32.4% |
| 2001 | 32.7% | 2011 | 28.9% | 2021 | 31.9% |
| 2002 | 31.5% | 2012 | 28.2% | 2022 | 30.3% |
| 2003 | 29.7% | 2013 | 29.2% | 2023 | 28.5% |
| 2004 | 30.2% | 2014 | 31.7% | 2024 | 28.9% |
| 2005 | 28.9% | 2015 | 30.8% | 2025 | 30.1% |
| 2006 | 29.2% | 2016 | 29.1% | 2026 | 31% |
데이터 표
| 1997 | 1,004억 | 2007 | 2,830억 | 2017 | 4,522억 |
| 1998 | 1,414억 | 2008 | 3,429억 | 2018 | 4,761억 |
| 1999 | 1,646억 | 2009 | 3,738억 | 2019 | 4,919억 |
| 2000 | 1,696억 | 2010 | 3,643억 | 2020 | 5,363억 |
| 2001 | 1,842억 | 2011 | 3,762억 | 2021 | 5,963억 |
| 2002 | 1,925억 | 2012 | 3,762억 | 2022 | 6,510억 |
| 2003 | 2,012억 | 2013 | 3,941억 | 2023 | 6,749억 |
| 2004 | 2,224억 | 2014 | 4,427억 | 2024 | 7,286억 |
| 2005 | 2,323억 | 2015 | 4,412억 | 2025 | 8,011억 |
| 2006 | 2,548억 | 2016 | 4,291억 | 2026 | 8,778억 |