Year,Total_US_returns_num,ME_aqua_prod_mt
1967,773,
1968,582,
1969,507,
1970,579,
1971,454,
1972,1025,
1973,659,
1974,903,
1975,1366,
1976,1030,
1977,1129,
1978,2438,
1979,1228,
1980,4188,
1981,4710,
1982,4818,
1983,1657,
1984,2678,20
1985,4584,
1986,5624,
1987,3592,365
1988,3598,455
1989,3715,905
1990,4444,2086
1991,2809,4560
1992,3340,5850
1993,2518,6755
1994,1725,6130
1995,1826,10020
1996,2895,10010
1997,1850,13222
1998,1909,13222
1999,1586,12246
2000,873,16461
2001,1106,13202
2002,984,6798
2003,1441,6007
2004,1633,8515
2005,1320,5263