year speed extimate
1971 0.092 0.092
1972 1
1973 0.184
1974 0.5
1975 0.5 0.368
1976
1977 0.5 0.736
1978
1979 1 1.472
1980
1981 2.944
1982
1983 5.888
1984 4
1985 11.4 11.776
1986 4
1987 11 23.552
1988
1989 47.104
1990 44
1991 94.208
1992 54
1993 188.416
1994 88
1995 376.832
1996 35.9
1997 525 753.664
1998
1999 1354 1507.328
2000 3561
2001 3014.656
2002 5935
2003 9726 6029.312
2004
2005 14564 12058.62
2006 27079
2007 8800 24117.25
2008 76383
2009 42820 48234.5
2010 520833
2011 96468.99
2012 1041666
2013
2014 2083332
2015
2016 4166664
2017
2018 8333328
2019
2020 16666656
2021
2022 33333312
2023
2024 66666624
2025
2026 133333248
2027
2028 266666496
2029
2030 533332992
2031
2032 1.067E+09