Show data table
| 1990 | 21.3% | 2003 | 20.4% | 2016 | 24.1% |
| 1991 | 19.9% | 2004 | 21.2% | 2017 | 24.6% |
| 1992 | 20.4% | 2005 | 23.2% | 2018 | 24.2% |
| 1993 | 21.1% | 2006 | 24.2% | 2019 | 23.2% |
| 1994 | 19.2% | 2007 | 26.3% | 2020 | 27% |
| 1995 | 18.7% | 2008 | 28.9% | 2021 | 24.2% |
| 1996 | 18.5% | 2009 | 26.5% | 2022 | 26.5% |
| 1997 | 20.1% | 2010 | 24.8% | 2023 | 25.8% |
| 1998 | 20.2% | 2011 | 25.2% | 2024 | 26.9% |
| 1999 | 21.6% | 2012 | 25.9% | 2025 | 27.7% |
| 2000 | 20.8% | 2013 | 25.7% | 2026 | 28.1% |
| 2001 | 19.9% | 2014 | 25.9% | | |
| 2002 | 21.4% | 2015 | 23.9% | | |
Show data table
| 1990 | 57.2B | 2003 | 110B | 2016 | 264B |
| 1991 | 60.5B | 2004 | 121B | 2017 | 282B |
| 1992 | 63.7B | 2005 | 139B | 2018 | 290B |
| 1993 | 67.2B | 2006 | 158B | 2019 | 288B |
| 1994 | 68.2B | 2007 | 184B | 2020 | 311B |
| 1995 | 67.6B | 2008 | 224B | 2021 | 308B |
| 1996 | 75.1B | 2009 | 214B | 2022 | 353B |
| 1997 | 81.1B | 2010 | 210B | 2023 | 382B |
| 1998 | 87.9B | 2011 | 223B | 2024 | 430B |
| 1999 | 95.6B | 2012 | 238B | 2025 | 473B |
| 2000 | 92.9B | 2013 | 250B | 2026 | 513B |
| 2001 | 96.1B | 2014 | 259B | | |
| 2002 | 108B | 2015 | 258B | | |
Show data table
| 1990 | 22.6% | 2003 | 24.1% | 2016 | 28.6% |
| 1991 | 20.8% | 2004 | 24.5% | 2017 | 27.9% |
| 1992 | 22.3% | 2005 | 28.6% | 2018 | 27.8% |
| 1993 | 23.1% | 2006 | 26% | 2019 | 27% |
| 1994 | 21.7% | 2007 | 26.4% | 2020 | 34.1% |
| 1995 | 21.3% | 2008 | 28.3% | 2021 | 30.1% |
| 1996 | 17.6% | 2009 | 28.1% | 2022 | 31.8% |
| 1997 | 18.6% | 2010 | 28.7% | 2023 | 30.2% |
| 1998 | 18.7% | 2011 | 31.2% | 2024 | 30.9% |
| 1999 | 18.4% | 2012 | 32.5% | 2025 | 31.3% |
| 2000 | 22.8% | 2013 | 30.4% | 2026 | 31.7% |
| 2001 | 23.7% | 2014 | 30.7% | | |
| 2002 | 25.8% | 2015 | 28.5% | | |
Show data table
| 1990 | 60.8B | 2003 | 130B | 2016 | 313B |
| 1991 | 63.3B | 2004 | 140B | 2017 | 320B |
| 1992 | 69.4B | 2005 | 171B | 2018 | 332B |
| 1993 | 73.6B | 2006 | 170B | 2019 | 335B |
| 1994 | 77.1B | 2007 | 185B | 2020 | 393B |
| 1995 | 76.7B | 2008 | 219B | 2021 | 384B |
| 1996 | 71.6B | 2009 | 228B | 2022 | 425B |
| 1997 | 75.1B | 2010 | 244B | 2023 | 448B |
| 1998 | 81.5B | 2011 | 277B | 2024 | 493B |
| 1999 | 81.4B | 2012 | 299B | 2025 | 534B |
| 2000 | 102B | 2013 | 296B | 2026 | 577B |
| 2001 | 114B | 2014 | 307B | | |
| 2002 | 130B | 2015 | 307B | | |