데이터 표
| 1997 | 31.9% | 2007 | 32% | 2017 | 29% |
| 1998 | 30.6% | 2008 | 32.8% | 2018 | 28.5% |
| 1999 | 32.5% | 2009 | 30.9% | 2019 | 29.4% |
| 2000 | 34.4% | 2010 | 30.1% | 2020 | 28.4% |
| 2001 | 31.5% | 2011 | 29.4% | 2021 | 30% |
| 2002 | 33% | 2012 | 29.5% | 2022 | 29.8% |
| 2003 | 35.9% | 2013 | 27.8% | 2023 | 30.7% |
| 2004 | 34.5% | 2014 | 27.5% | 2024 | 31.8% |
| 2005 | 32.7% | 2015 | 28.7% | 2025 | 32.2% |
| 2006 | 30.9% | 2016 | 28.4% | 2026 | 32% |
데이터 표
| 1997 | 637억 | 2007 | 1,194억 | 2017 | 1,794억 |
| 1998 | 639억 | 2008 | 1,362억 | 2018 | 1,884억 |
| 1999 | 730억 | 2009 | 1,283억 | 2019 | 2,039억 |
| 2000 | 855억 | 2010 | 1,316억 | 2020 | 1,898억 |
| 2001 | 795억 | 2011 | 1,364억 | 2021 | 2,185억 |
| 2002 | 852억 | 2012 | 1,374억 | 2022 | 2,432억 |
| 2003 | 965억 | 2013 | 1,397억 | 2023 | 2,771억 |
| 2004 | 968억 | 2014 | 1,452억 | 2024 | 3,063억 |
| 2005 | 1,009억 | 2015 | 1,607억 | 2025 | 3,360억 |
| 2006 | 1,036억 | 2016 | 1,690억 | 2026 | 3,613억 |
데이터 표
| 1997 | 32.3% | 2007 | 31.4% | 2017 | 31.8% |
| 1998 | 32.2% | 2008 | 33.8% | 2018 | 30.3% |
| 1999 | 32.5% | 2009 | 33.6% | 2019 | 31.4% |
| 2000 | 32% | 2010 | 32.5% | 2020 | 36.4% |
| 2001 | 37.4% | 2011 | 31.9% | 2021 | 35.3% |
| 2002 | 38.2% | 2012 | 33.3% | 2022 | 35% |
| 2003 | 36% | 2013 | 31.7% | 2023 | 35.3% |
| 2004 | 34.1% | 2014 | 31.7% | 2024 | 36.1% |
| 2005 | 32.5% | 2015 | 32.2% | 2025 | 36.2% |
| 2006 | 31.5% | 2016 | 31.1% | 2026 | 36.2% |
데이터 표
| 1997 | 644억 | 2007 | 1,173억 | 2017 | 1,963억 |
| 1998 | 673억 | 2008 | 1,401억 | 2018 | 2,000억 |
| 1999 | 730억 | 2009 | 1,392억 | 2019 | 2,175억 |
| 2000 | 796억 | 2010 | 1,422억 | 2020 | 2,436억 |
| 2001 | 943억 | 2011 | 1,479억 | 2021 | 2,573억 |
| 2002 | 988억 | 2012 | 1,552억 | 2022 | 2,859억 |
| 2003 | 967억 | 2013 | 1,590억 | 2023 | 3,186억 |
| 2004 | 958억 | 2014 | 1,673억 | 2024 | 3,485억 |
| 2005 | 1,002억 | 2015 | 1,801억 | 2025 | 3,778억 |
| 2006 | 1,053억 | 2016 | 1,850억 | 2026 | 4,083억 |