데이터 표
| 1987 | 17.3% | 2001 | 13.3% | 2015 | 12.2% |
| 1988 | 17.7% | 2002 | 15.5% | 2016 | 12.3% |
| 1989 | 16.4% | 2003 | 9.2% | 2017 | 12.1% |
| 1990 | 15.4% | 2004 | 11.3% | 2018 | 15.9% |
| 1991 | 14.6% | 2005 | 11.8% | 2019 | 17.1% |
| 1992 | 15.8% | 2006 | 22% | 2020 | 20.7% |
| 1993 | 15% | 2007 | 13.9% | 2021 | 13.3% |
| 1994 | 14.8% | 2008 | 14.8% | 2022 | 12% |
| 1995 | 15.7% | 2009 | 15.5% | 2023 | 14% |
| 1996 | 10.7% | 2010 | 15.9% | 2024 | 14.3% |
| 1997 | 12.9% | 2011 | 12% | 2025 | 15.6% |
| 1998 | 18.1% | 2012 | 14% | 2026 | 14.3% |
| 1999 | 17.7% | 2013 | 11.1% | | |
| 2000 | 15.2% | 2014 | 13.6% | | |
데이터 표
| 1987 | 626억 | 2001 | 875억 | 2015 | 1,341억 |
| 1988 | 673억 | 2002 | 1,060억 | 2016 | 1,449억 |
| 1989 | 659억 | 2003 | 638억 | 2017 | 1,540억 |
| 1990 | 624억 | 2004 | 785억 | 2018 | 2,105억 |
| 1991 | 580억 | 2005 | 880억 | 2019 | 2,448억 |
| 1992 | 596억 | 2006 | 1,765억 | 2020 | 2,983억 |
| 1993 | 548억 | 2007 | 1,170억 | 2021 | 1,996억 |
| 1994 | 700억 | 2008 | 1,347억 | 2022 | 1,913억 |
| 1995 | 881억 | 2009 | 1,503억 | 2023 | 2,319억 |
| 1996 | 550억 | 2010 | 1,687억 | 2024 | 2,490억 |
| 1997 | 730억 | 2011 | 1,380억 | 2025 | 2,888억 |
| 1998 | 1,095억 | 2012 | 1,790억 | 2026 | 2,781억 |
| 1999 | 1,130억 | 2013 | 927억 | | |
| 2000 | 934억 | 2014 | 1,380억 | | |
데이터 표
| 1987 | 21.9% | 2001 | 14.1% | 2015 | 12.7% |
| 1988 | 21.4% | 2002 | 16.7% | 2016 | 11.1% |
| 1989 | 19.6% | 2003 | 12.3% | 2017 | 13.1% |
| 1990 | 22% | 2004 | 13.1% | 2018 | 16.8% |
| 1991 | 22.6% | 2005 | 16.2% | 2019 | 15.8% |
| 1992 | 23.1% | 2006 | 13.4% | 2020 | 24% |
| 1993 | 20.6% | 2007 | 12.9% | 2021 | 19% |
| 1994 | 22.4% | 2008 | 16% | 2022 | 17.1% |
| 1995 | 20.6% | 2009 | 16% | 2023 | 17.5% |
| 1996 | 11.7% | 2010 | 17.3% | 2024 | 19.4% |
| 1997 | 14.5% | 2011 | 14.2% | 2025 | 21.1% |
| 1998 | 18.1% | 2012 | 14.7% | 2026 | 19.3% |
| 1999 | 18.2% | 2013 | 13.4% | | |
| 2000 | 17.2% | 2014 | 16.7% | | |
데이터 표
| 1987 | 795억 | 2001 | 932억 | 2015 | 1,400억 |
| 1988 | 815억 | 2002 | 1,141억 | 2016 | 1,309억 |
| 1989 | 790억 | 2003 | 849억 | 2017 | 1,667억 |
| 1990 | 891억 | 2004 | 905억 | 2018 | 2,228억 |
| 1991 | 897억 | 2005 | 1,206억 | 2019 | 2,257억 |
| 1992 | 873억 | 2006 | 1,075억 | 2020 | 3,448억 |
| 1993 | 755억 | 2007 | 1,083억 | 2021 | 2,854억 |
| 1994 | 1,059억 | 2008 | 1,459억 | 2022 | 2,732억 |
| 1995 | 1,152억 | 2009 | 1,555억 | 2023 | 2,883억 |
| 1996 | 605억 | 2010 | 1,830억 | 2024 | 3,365억 |
| 1997 | 819억 | 2011 | 1,627억 | 2025 | 3,906억 |
| 1998 | 1,095억 | 2012 | 1,889억 | 2026 | 3,749억 |
| 1999 | 1,162억 | 2013 | 1,119억 | | |
| 2000 | 1,057억 | 2014 | 1,686억 | | |