데이터 표
| 1984 | 17.6% | 1999 | 11% | 2014 | 14.2% |
| 1985 | 19.7% | 2000 | 8.6% | 2015 | 21.7% |
| 1986 | 20.7% | 2001 | 10.9% | 2016 | 13.4% |
| 1987 | 19.3% | 2002 | 12.1% | 2017 | 18.8% |
| 1988 | 17.5% | 2003 | 10.7% | 2018 | 17.8% |
| 1989 | 18.4% | 2004 | 10.7% | 2019 | 15.8% |
| 1990 | 19.2% | 2005 | 11.4% | 2020 | 18.3% |
| 1991 | 17.7% | 2006 | 10.9% | 2021 | 17.1% |
| 1992 | 18.4% | 2007 | 11.9% | 2022 | 14.5% |
| 1993 | 17.5% | 2008 | 13.7% | 2023 | 16.5% |
| 1994 | 18.1% | 2009 | 14% | 2024 | 16.5% |
| 1995 | 14.2% | 2010 | 17.5% | 2025 | 17.2% |
| 1996 | 12.1% | 2011 | 14.1% | 2026 | 17.6% |
| 1997 | 13.2% | 2012 | 16.8% | | |
| 1998 | 11.1% | 2013 | 25.3% | | |
데이터 표
| 1984 | 145억 | 1999 | 189억 | 2014 | 605억 |
| 1985 | 170억 | 2000 | 156억 | 2015 | 928억 |
| 1986 | 185억 | 2001 | 222억 | 2016 | 603억 |
| 1987 | 182억 | 2002 | 269억 | 2017 | 880억 |
| 1988 | 175억 | 2003 | 255억 | 2018 | 875억 |
| 1989 | 192억 | 2004 | 264억 | 2019 | 827억 |
| 1990 | 210억 | 2005 | 295억 | 2020 | 958억 |
| 1991 | 200억 | 2006 | 295억 | 2021 | 907억 |
| 1992 | 212억 | 2007 | 339억 | 2022 | 828억 |
| 1993 | 213억 | 2008 | 419억 | 2023 | 998억 |
| 1994 | 237억 | 2009 | 448억 | 2024 | 1,079억 |
| 1995 | 210억 | 2010 | 589억 | 2025 | 1,206억 |
| 1996 | 182억 | 2011 | 509억 | 2026 | 1,335억 |
| 1997 | 210억 | 2012 | 654억 | | |
| 1998 | 178억 | 2013 | 1,047억 | | |
데이터 표
| 1984 | 23.3% | 1999 | 11.5% | 2014 | 14.5% |
| 1985 | 24.8% | 2000 | 9.7% | 2015 | 19.1% |
| 1986 | 25.6% | 2001 | 13% | 2016 | 18.9% |
| 1987 | 22.4% | 2002 | 14.3% | 2017 | 18.8% |
| 1988 | 20.2% | 2003 | 12.8% | 2018 | 19.2% |
| 1989 | 19.7% | 2004 | 11.7% | 2019 | 20.1% |
| 1990 | 20.3% | 2005 | 12.8% | 2020 | 18.8% |
| 1991 | 19.9% | 2006 | 12.5% | 2021 | 20% |
| 1992 | 20.4% | 2007 | 13.1% | 2022 | 18.4% |
| 1993 | 16.3% | 2008 | 15.1% | 2023 | 17.9% |
| 1994 | 21.8% | 2009 | 13.7% | 2024 | 19.1% |
| 1995 | 18.4% | 2010 | 13.3% | 2025 | 19.5% |
| 1996 | 15.5% | 2011 | 13.2% | 2026 | 18.8% |
| 1997 | 14.5% | 2012 | 14.9% | | |
| 1998 | 13.1% | 2013 | 14.8% | | |
데이터 표
| 1984 | 193억 | 1999 | 197억 | 2014 | 618억 |
| 1985 | 214억 | 2000 | 176억 | 2015 | 816억 |
| 1986 | 229억 | 2001 | 266억 | 2016 | 851억 |
| 1987 | 211억 | 2002 | 317억 | 2017 | 884억 |
| 1988 | 202억 | 2003 | 303억 | 2018 | 941억 |
| 1989 | 206억 | 2004 | 288억 | 2019 | 1,051억 |
| 1990 | 221억 | 2005 | 332억 | 2020 | 985억 |
| 1991 | 225억 | 2006 | 336억 | 2021 | 1,056억 |
| 1992 | 235억 | 2007 | 373억 | 2022 | 1,053억 |
| 1993 | 197억 | 2008 | 463억 | 2023 | 1,079억 |
| 1994 | 285억 | 2009 | 436억 | 2024 | 1,255억 |
| 1995 | 270억 | 2010 | 447억 | 2025 | 1,370억 |
| 1996 | 234억 | 2011 | 478억 | 2026 | 1,419억 |
| 1997 | 231억 | 2012 | 578억 | | |
| 1998 | 210억 | 2013 | 613억 | | |