Show data table
| 1985 | 10.3% | 1999 | 18.1% | 2013 | 21.7% |
| 1986 | 11.2% | 2000 | 16.8% | 2014 | 19.2% |
| 1987 | 14% | 2001 | 16.1% | 2015 | 18.3% |
| 1988 | 11.9% | 2002 | 15% | 2016 | 18.6% |
| 1989 | 16.1% | 2003 | 15.8% | 2017 | 19.3% |
| 1990 | 10.9% | 2004 | 16.1% | 2018 | 19.8% |
| 1991 | 14.2% | 2005 | 15.3% | 2019 | 20% |
| 1992 | 14.2% | 2006 | 36.2% | 2020 | 19.3% |
| 1993 | 14.1% | 2007 | 17.8% | 2021 | 20.4% |
| 1994 | 15.9% | 2008 | 15% | 2022 | 22% |
| 1995 | 16.8% | 2009 | 17.4% | 2023 | 22.5% |
| 1996 | 18.1% | 2010 | 17.6% | 2024 | 22% |
| 1997 | 17.4% | 2011 | 18.4% | 2025 | 22.5% |
| 1998 | 17.1% | 2012 | 19.9% | 2026 | 21.2% |
Show data table
| 1985 | 80.5B | 1999 | 378B | 2013 | 1.44T |
| 1986 | 88.9B | 2000 | 354B | 2014 | 1.32T |
| 1987 | 112B | 2001 | 376B | 2015 | 1.28T |
| 1988 | 104B | 2002 | 378B | 2016 | 1.41T |
| 1989 | 152B | 2003 | 435B | 2017 | 1.58T |
| 1990 | 103B | 2004 | 462B | 2018 | 1.75T |
| 1991 | 141B | 2005 | 497B | 2019 | 1.88T |
| 1992 | 142B | 2006 | 1.24T | 2020 | 1.98T |
| 1993 | 143B | 2007 | 651B | 2021 | 2.22T |
| 1994 | 189B | 2008 | 631B | 2022 | 2.55T |
| 1995 | 224B | 2009 | 772B | 2023 | 2.75T |
| 1996 | 269B | 2010 | 880B | 2024 | 3.08T |
| 1997 | 279B | 2011 | 1.05T | 2025 | 3.55T |
| 1998 | 319B | 2012 | 1.28T | 2026 | 3.83T |
Show data table
| 1985 | 11.5% | 1999 | 21.4% | 2013 | 25.3% |
| 1986 | 16.3% | 2000 | 19.8% | 2014 | 20.9% |
| 1987 | 19.2% | 2001 | 19.7% | 2015 | 20.4% |
| 1988 | 16.2% | 2002 | 19.5% | 2016 | 21.6% |
| 1989 | 14.2% | 2003 | 17.6% | 2017 | 26.3% |
| 1990 | 18.4% | 2004 | 20.3% | 2018 | 24.2% |
| 1991 | 17% | 2005 | 20.2% | 2019 | 23.3% |
| 1992 | 16.8% | 2006 | 21.9% | 2020 | 24.4% |
| 1993 | 17.9% | 2007 | 22.8% | 2021 | 27.8% |
| 1994 | 17.8% | 2008 | 18.6% | 2022 | 32.9% |
| 1995 | 19.4% | 2009 | 21.5% | 2023 | 29.4% |
| 1996 | 19.8% | 2010 | 21.7% | 2024 | 27.8% |
| 1997 | 20% | 2011 | 20.4% | 2025 | 26.1% |
| 1998 | 19.7% | 2012 | 22.7% | 2026 | 24.7% |
Show data table
| 1985 | 90B | 1999 | 446B | 2013 | 1.68T |
| 1986 | 129B | 2000 | 418B | 2014 | 1.44T |
| 1987 | 154B | 2001 | 459B | 2015 | 1.42T |
| 1988 | 142B | 2002 | 489B | 2016 | 1.65T |
| 1989 | 133B | 2003 | 484B | 2017 | 2.15T |
| 1990 | 175B | 2004 | 582B | 2018 | 2.14T |
| 1991 | 169B | 2005 | 655B | 2019 | 2.2T |
| 1992 | 167B | 2006 | 748B | 2020 | 2.5T |
| 1993 | 182B | 2007 | 834B | 2021 | 3.04T |
| 1994 | 211B | 2008 | 784B | 2022 | 3.82T |
| 1995 | 260B | 2009 | 956B | 2023 | 3.59T |
| 1996 | 294B | 2010 | 1.08T | 2024 | 3.9T |
| 1997 | 322B | 2011 | 1.16T | 2025 | 4.11T |
| 1998 | 367B | 2012 | 1.45T | 2026 | 4.46T |