Show data table
| 1968 | 5.09M | 1993 | 22.6M | 2013 | 211M |
| 1969 | 5.26M | 1994 | 24.2M | 2014 | 189M |
| 1970 | 6.2M | 2001 | 13.9M | 2015 | 202M |
| 1971 | 8.62M | 2002 | 19.5M | 2016 | 216M |
| 1972 | 9.12M | 2003 | 33.7M | 2017 | 202M |
| 1973 | 8.94M | 2004 | 75.9M | 2018 | 166M |
| 1974 | 8.58M | 2005 | 97.8M | 2019 | 173M |
| 1975 | 10.7M | 2006 | 116M | 2020 | 171M |
| 1976 | 12.6M | 2007 | 125M | 2021 | 208M |
| 1977 | 15.4M | 2008 | 139M | 2022 | 218M |
| 1978 | 18.3M | 2009 | 139M | 2023 | 245M |
| 1979 | 27.2M | 2010 | 143M | 2024 | 238M |
| 1980 | 36.9M | 2011 | 146M | 2025 | 230M |
| 1981 | 35.2M | 2012 | 169M | | |
Show data table
| 1968 | 0.7% | 1993 | 0.5% | 2013 | 0.8% |
| 1969 | 0.7% | 1994 | 0.5% | 2014 | 0.7% |
| 1970 | 0.8% | 2001 | 0.2% | 2015 | 0.8% |
| 1971 | 1% | 2002 | 0.2% | 2016 | 0.9% |
| 1972 | 0.8% | 2003 | 0.3% | 2017 | 0.8% |
| 1973 | 0.7% | 2004 | 0.6% | 2018 | 0.7% |
| 1974 | 0.4% | 2005 | 0.6% | 2019 | 0.7% |
| 1975 | 0.4% | 2006 | 0.6% | 2020 | 0.8% |
| 1976 | 0.5% | 2007 | 0.6% | 2021 | 0.9% |
| 1977 | 0.5% | 2008 | 0.5% | 2022 | 0.8% |
| 1978 | 0.5% | 2009 | 0.7% | 2023 | 1% |
| 1979 | 0.6% | 2010 | 0.6% | 2024 | 1% |
| 1980 | 0.6% | 2011 | 0.6% | 2025 | 0.9% |
| 1981 | 0.5% | 2012 | 0.6% | | |