1885	1886	1887	1889	1894	1897	1901	1903	1907	1912	1914	1917	1921	1926	1929	1930	1931	1932	1936	1939	1942	1942	1943	1944	1945	1946	Airwatercontrol CO2
1981	1979	1977	1976	1976	1975	1973	1971	1970	1968	1966	1964	1962	1961	1960	1959	1957	1956	1954	1953	1952	1951	1950	1948	1947
1984	1985	1986	1988	1988	1989	1991	1992	1995	1998	2000	2002	2003	2005	2006	2007	2008	2009	2010	2011	2012	2014	2015	2016	2018