World -8000 -7000 -6000 -5000 -4000 -3000 -2000 -1000 0 500 600 700 800 900 1000 1100 1200 1300 1400 1500 1600 1700 1800 1860 1870 1880 1890 1900 1910 1920 1930 1940 1950 1960 1970 1980 1990 2000 2010 2020 2025 2030 2038 2039 2040 2041 2042 2043 2044 2045 2046 2047 2048 2049 2050 2051 2052 2053 2054 2055 2056 2057 2058 2059 2060 2061 2062 2063 2064 2065 2066 2067 2068 2069 2070 2071 2072 2073 2074 2075 2076 2077 2078 2079 2080 2090 2100 2110 2120 2130 2140 2150 2160 2170 2180 2200 2300 2400 2500 2600 2700 3000 4000 January February March April May June July August September October November December -- starts at 2063-01-01