Year | Value | 2022 | 11,999,550 | 2021 | 11,877,230 | 2020 | 11,892,389 | 2019 | 11,930,879 | 2018 | 11,970,023 | 2017 | 11,998,731 | 2016 | 12,019,296 | 2015 | 12,001,311 | 2014 | 11,995,081 | 2013 | 12,061,988 | 2012 | 12,199,733 | 2011 | 12,399,527 | 2010 | 12,697,608 | 2009 | 12,986,547 | 2008 | 13,236,706 | 2007 | 13,420,721 | 2006 | 13,537,194 | 2005 | 13,608,273 | 2004 | 13,656,851 | 2003 | 13,703,687 | 2002 | 13,789,041 | 2001 | 13,937,535 | 2000 | 14,128,224 | 1999 | 14,328,119 | 1998 | 14,492,918 | 1997 | 14,641,377 | 1996 | 14,764,921 | 1995 | 14,880,934 | 1994 | 15,020,401 | 1993 | 15,163,724 | 1992 | 15,307,520 | 1991 | 15,481,683 | 1990 | 15,641,823 | 1989 | 15,803,669 | 1988 | 15,994,448 | 1987 | 16,205,376 | 1986 | 16,361,353 | 1985 | 16,468,940 | 1984 | 16,584,437 | 1983 | 16,664,285 | 1982 | 16,649,170 | 1981 | 16,586,202 | 1980 | 16,496,148 | 1979 | 16,342,343 | 1978 | 16,168,580 | 1977 | 16,046,152 | 1976 | 15,999,324 | 1975 | 15,969,772 | 1974 | 15,905,015 | 1973 | 15,818,660 | 1972 | 15,728,009 | 1971 | 15,629,283 | 1970 | 15,568,961 | 1969 | 15,533,883 | 1968 | 15,509,876 | 1967 | 15,473,928 | 1966 | 15,341,940 | 1965 | 14,951,298 | 1964 | 14,433,508 | 1963 | 13,969,481 | 1962 | 13,474,309 | 1961 | 13,092,809 | 1960 | 13,106,346 |
|