Year	Percent
1950	10.1123
1955	9.0283
1960	7.41404
1965	9.18284
1970	9.50193
1975	8.63543
1980	7.84456
1985	7.15102
1990	7.37322
1995	7.28697
2000	7.23332
2005	6.86231
2010	5.92043
2015	6.066
2020	5.25148
2025	5.71078
2030	5.49871
2035	5.16538
2040	4.93777
2045	4.83705
2050	4.80132
2055	4.86204
2060	4.94593
2065	4.93082
2070	4.84251
2075	4.78778
2080	4.79914
2085	4.85726
2090	4.92598
2095	4.95842
2100	4.93291