Year	Percent
1950	8.37463
1955	8.73878
1960	7.40141
1965	6.99448
1970	7.19418
1975	7.3227
1980	6.92386
1985	6.05909
1990	5.89161
1995	6.69737
2000	6.97324
2005	5.43128
2010	5.56948
2015	6.131
2020	5.99267
2025	6.1231
2030	6.06702
2035	5.79799
2040	5.57279
2045	5.58262
2050	5.68669
2055	5.74904
2060	5.73181
2065	5.63688
2070	5.5181
2075	5.45183
2080	5.45279
2085	5.47092
2090	5.45201
2095	5.38254
2100	5.29283