데이터 표
| 1990 | 30.7% | 2003 | 23.5% | 2016 | 20.3% |
| 1991 | 29% | 2004 | 22.5% | 2017 | 19.6% |
| 1992 | 30% | 2005 | 21.7% | 2018 | 20.2% |
| 1993 | 28.1% | 2006 | 23% | 2019 | 21.6% |
| 1994 | 28.7% | 2007 | 23.3% | 2020 | 20.1% |
| 1995 | 25.7% | 2008 | 23.5% | 2021 | 18.4% |
| 1996 | 25.7% | 2009 | 25% | 2022 | 20.1% |
| 1997 | 26% | 2010 | 22.3% | 2023 | 20.9% |
| 1998 | 22.5% | 2011 | 23.5% | 2024 | 20.6% |
| 1999 | 21.6% | 2012 | 25.4% | 2025 | 19.9% |
| 2000 | 19.6% | 2013 | 24.3% | 2026 | 19.2% |
| 2001 | 23.9% | 2014 | 23.3% | | |
| 2002 | 23.2% | 2015 | 22.2% | | |
데이터 표
| 1990 | 392억 | 2003 | 1,071억 | 2016 | 2,531억 |
| 1991 | 427억 | 2004 | 1,163억 | 2017 | 2,694억 |
| 1992 | 493억 | 2005 | 1,236억 | 2018 | 2,918억 |
| 1993 | 526억 | 2006 | 1,436억 | 2019 | 3,263억 |
| 1994 | 611억 | 2007 | 1,625억 | 2020 | 2,857억 |
| 1995 | 623억 | 2008 | 1,896억 | 2021 | 2,852억 |
| 1996 | 709억 | 2009 | 1,867억 | 2022 | 3,605억 |
| 1997 | 798억 | 2010 | 1,857억 | 2023 | 3,810억 |
| 1998 | 694억 | 2011 | 2,175억 | 2024 | 3,976억 |
| 1999 | 709억 | 2012 | 2,502억 | 2025 | 4,025억 |
| 2000 | 760억 | 2013 | 2,511억 | 2026 | 4,188억 |
| 2001 | 916억 | 2014 | 2,618억 | | |
| 2002 | 968억 | 2015 | 2,608억 | | |
데이터 표
| 1990 | 30.5% | 2003 | 28.1% | 2016 | 22.9% |
| 1991 | 27.4% | 2004 | 25.9% | 2017 | 22% |
| 1992 | 28.2% | 2005 | 24.5% | 2018 | 22.8% |
| 1993 | 24.6% | 2006 | 25.6% | 2019 | 23.6% |
| 1994 | 23.3% | 2007 | 25.9% | 2020 | 25% |
| 1995 | 22.6% | 2008 | 26.9% | 2021 | 24.5% |
| 1996 | 22.4% | 2009 | 30.9% | 2022 | 24.6% |
| 1997 | 21.2% | 2010 | 26.6% | 2023 | 25% |
| 1998 | 23.1% | 2011 | 27.1% | 2024 | 24% |
| 1999 | 24.6% | 2012 | 28.5% | 2025 | 23.4% |
| 2000 | 25.6% | 2013 | 27.8% | 2026 | 22.5% |
| 2001 | 28.2% | 2014 | 26% | | |
| 2002 | 27.1% | 2015 | 24.7% | | |
데이터 표
| 1990 | 390억 | 2003 | 1,280억 | 2016 | 2,857억 |
| 1991 | 403억 | 2004 | 1,336억 | 2017 | 3,025억 |
| 1992 | 463억 | 2005 | 1,397억 | 2018 | 3,301억 |
| 1993 | 462억 | 2006 | 1,599억 | 2019 | 3,566억 |
| 1994 | 495억 | 2007 | 1,804억 | 2020 | 3,552억 |
| 1995 | 548억 | 2008 | 2,171억 | 2021 | 3,787억 |
| 1996 | 619억 | 2009 | 2,306억 | 2022 | 4,423억 |
| 1997 | 649억 | 2010 | 2,216억 | 2023 | 4,560억 |
| 1998 | 713억 | 2011 | 2,505억 | 2024 | 4,642억 |
| 1999 | 807억 | 2012 | 2,808억 | 2025 | 4,740억 |
| 2000 | 995억 | 2013 | 2,870억 | 2026 | 4,908억 |
| 2001 | 1,084억 | 2014 | 2,913억 | | |
| 2002 | 1,133억 | 2015 | 2,908억 | | |