데이터 표
| 1997 | 26.7% | 2007 | 18.6% | 2017 | 14.9% |
| 1998 | 27.2% | 2008 | 22.4% | 2018 | 13.5% |
| 1999 | 23.3% | 2009 | 21.9% | 2019 | 13.2% |
| 2000 | 25.3% | 2010 | 16.7% | 2020 | 13.4% |
| 2001 | 23.4% | 2011 | 19.2% | 2021 | 13.9% |
| 2002 | 19.6% | 2012 | 22.2% | 2022 | 16.4% |
| 2003 | 24.8% | 2013 | 18.4% | 2023 | 13.8% |
| 2004 | 21.7% | 2014 | 17.9% | 2024 | 14.4% |
| 2005 | 22% | 2015 | 16.6% | 2025 | 14.2% |
| 2006 | 21.7% | 2016 | 11.7% | 2026 | 13.8% |
데이터 표
| 1997 | 5.52억 | 2007 | 46.8억 | 2017 | 198억 |
| 1998 | 7.1억 | 2008 | 103억 | 2018 | 193억 |
| 1999 | 8.71억 | 2009 | 118억 | 2019 | 208억 |
| 2000 | 12.3억 | 2010 | 102억 | 2020 | 213억 |
| 2001 | 15.7억 | 2011 | 152억 | 2021 | 241억 |
| 2002 | 16.5억 | 2012 | 222억 | 2022 | 325억 |
| 2003 | 27.4억 | 2013 | 206억 | 2023 | 304억 |
| 2004 | 29.9억 | 2014 | 222억 | 2024 | 347억 |
| 2005 | 36.6억 | 2015 | 208억 | 2025 | 385억 |
| 2006 | 45억 | 2016 | 149억 | 2026 | 402억 |
데이터 표
| 1997 | 26.9% | 2007 | 14.4% | 2017 | 17.8% |
| 1998 | 26.1% | 2008 | 11.7% | 2018 | 13.7% |
| 1999 | 20.8% | 2009 | 14.4% | 2019 | 13.6% |
| 2000 | 25.9% | 2010 | 14.6% | 2020 | 13.5% |
| 2001 | 22.6% | 2011 | 15.4% | 2021 | 13.4% |
| 2002 | 19.4% | 2012 | 14.7% | 2022 | 13% |
| 2003 | 20.8% | 2013 | 16.9% | 2023 | 13.7% |
| 2004 | 20.3% | 2014 | 17% | 2024 | 14.5% |
| 2005 | 21.1% | 2015 | 17.3% | 2025 | 14.1% |
| 2006 | 16% | 2016 | 14.1% | 2026 | 13.5% |
데이터 표
| 1997 | 5.56억 | 2007 | 36.3억 | 2017 | 236억 |
| 1998 | 6.8억 | 2008 | 53.8억 | 2018 | 196억 |
| 1999 | 7.78억 | 2009 | 77.2억 | 2019 | 215억 |
| 2000 | 12.6억 | 2010 | 88.8억 | 2020 | 216억 |
| 2001 | 15.2억 | 2011 | 122억 | 2021 | 232억 |
| 2002 | 16.3억 | 2012 | 147억 | 2022 | 258억 |
| 2003 | 23억 | 2013 | 189억 | 2023 | 301억 |
| 2004 | 27.9억 | 2014 | 211억 | 2024 | 349억 |
| 2005 | 35.1억 | 2015 | 217억 | 2025 | 383억 |
| 2006 | 33.3억 | 2016 | 179억 | 2026 | 392억 |