Show data table
| 2000 | 2.72B | 2009 | 4.89B | 2018 | 6.69B |
| 2001 | 2.73B | 2010 | 5.54B | 2019 | 6.44B |
| 2002 | 2.93B | 2011 | 6.24B | 2020 | 6.41B |
| 2003 | 3.34B | 2012 | 5.91B | 2021 | 7.91B |
| 2004 | 3.76B | 2013 | 6.27B | 2022 | 7.43B |
| 2005 | 3.99B | 2014 | 6.53B | 2023 | 8.24B |
| 2006 | 4.37B | 2015 | 6.15B | 2024 | 8.46B |
| 2007 | 5.04B | 2016 | 6.12B | 2025 | 8.99B |
| 2008 | 5.55B | 2017 | 6.38B | 2026 | 9.44B |
Show data table
| 1980 | 1.13B | 1996 | 3.31B | 2012 | 5.54B |
| 1981 | 1.18B | 1997 | 3.67B | 2013 | 5.82B |
| 1982 | 1.26B | 1998 | 3.92B | 2014 | 5.99B |
| 1983 | 1.32B | 1999 | 4.38B | 2015 | 5.92B |
| 1984 | 1.47B | 2000 | 4.59B | 2016 | 6.03B |
| 1985 | 1.65B | 2001 | 4.6B | 2017 | 6.28B |
| 1986 | 1.79B | 2002 | 4.56B | 2018 | 6.55B |
| 1987 | 1.87B | 2003 | 4.49B | 2019 | 6.4B |
| 1988 | 2.1B | 2004 | 4.67B | 2020 | 6.01B |
| 1989 | 2.34B | 2005 | 4.97B | 2021 | 7.23B |
| 1990 | 2.41B | 2006 | 5.47B | 2022 | 7.09B |
| 1991 | 2.69B | 2007 | 6.05B | 2023 | 7.4B |
| 1992 | 2.82B | 2008 | 6.01B | 2024 | 7.45B |
| 1993 | 2.93B | 2009 | 5.32B | 2025 | 7.48B |
| 1994 | 3.03B | 2010 | 5.77B | 2026 | 7.48B |
| 1995 | 3.14B | 2011 | 5.54B | | |
Show data table
| 2000 | 5.29B | 2009 | 5.57B | 2018 | 6.95B |
| 2001 | 5.24B | 2010 | 6.01B | 2019 | 6.8B |
| 2002 | 5.22B | 2011 | 5.76B | 2020 | 6.44B |
| 2003 | 5.08B | 2012 | 5.75B | 2021 | 7.59B |
| 2004 | 5.26B | 2013 | 6.04B | 2022 | 7.23B |
| 2005 | 5.54B | 2014 | 6.26B | 2023 | 7.47B |
| 2006 | 5.98B | 2015 | 6.27B | 2024 | 7.45B |
| 2007 | 6.44B | 2016 | 6.43B | 2025 | 7.45B |
| 2008 | 6.32B | 2017 | 6.71B | 2026 | 7.42B |