데이터 표
| 1990 | 22.5% | 2003 | 22.2% | 2016 | 21% |
| 1991 | 19.4% | 2004 | 20.8% | 2017 | 20.8% |
| 1992 | 18% | 2005 | 18.2% | 2018 | 22.2% |
| 1993 | 21.3% | 2006 | 21% | 2019 | 20.5% |
| 1994 | 19.4% | 2007 | 18.3% | 2020 | 21.3% |
| 1995 | 19.2% | 2008 | 16.5% | 2021 | 23.4% |
| 1996 | 24.1% | 2009 | 16% | 2022 | 25.6% |
| 1997 | 20.9% | 2010 | 16.9% | 2023 | 22.3% |
| 1998 | 12.4% | 2011 | 17.1% | 2024 | 22.2% |
| 1999 | 13.1% | 2012 | 23.2% | 2025 | 23.1% |
| 2000 | 15% | 2013 | 19.4% | 2026 | 24.5% |
| 2001 | 15.8% | 2014 | 21.3% | | |
| 2002 | 22.5% | 2015 | 23.2% | | |
데이터 표
| 1990 | 22억 | 2003 | 120억 | 2016 | 473억 |
| 1991 | 22.1억 | 2004 | 130억 | 2017 | 507억 |
| 1992 | 22.9억 | 2005 | 142억 | 2018 | 592억 |
| 1993 | 32.2억 | 2006 | 222억 | 2019 | 593억 |
| 1994 | 31.6억 | 2007 | 205억 | 2020 | 655억 |
| 1995 | 35.3억 | 2008 | 205억 | 2021 | 778억 |
| 1996 | 47.7억 | 2009 | 198억 | 2022 | 904억 |
| 1997 | 44.6억 | 2010 | 262억 | 2023 | 874억 |
| 1998 | 47.4억 | 2011 | 325억 | 2024 | 960억 |
| 1999 | 54.6억 | 2012 | 463억 | 2025 | 1,109억 |
| 2000 | 63.8억 | 2013 | 422억 | 2026 | 1,380억 |
| 2001 | 70.7억 | 2014 | 424억 | | |
| 2002 | 109억 | 2015 | 465억 | | |
데이터 표
| 2004 | 23.9% | 2012 | 21.5% | 2020 | 18.5% |
| 2005 | 21.3% | 2013 | 20.1% | 2021 | 20.8% |
| 2006 | 19% | 2014 | 23.9% | 2022 | 28.7% |
| 2007 | 19.7% | 2015 | 25.7% | 2023 | 24.8% |
| 2008 | 19.8% | 2016 | 20.8% | 2024 | 23.6% |
| 2009 | 19.6% | 2017 | 20.3% | 2025 | 23.4% |
| 2010 | 17.3% | 2018 | 19% | 2026 | 24% |
| 2011 | 17% | 2019 | 17.8% | | |
데이터 표
| 2004 | 150억 | 2012 | 430억 | 2020 | 569억 |
| 2005 | 166억 | 2013 | 437억 | 2021 | 691억 |
| 2006 | 200억 | 2014 | 477억 | 2022 | 1,013억 |
| 2007 | 221억 | 2015 | 514억 | 2023 | 970억 |
| 2008 | 246억 | 2016 | 470억 | 2024 | 1,018억 |
| 2009 | 243억 | 2017 | 494억 | 2025 | 1,124억 |
| 2010 | 269억 | 2018 | 506억 | 2026 | 1,351억 |
| 2011 | 324억 | 2019 | 516억 | | |