Year	Percent
1950	9.58248
1955	11.02764
1960	11.36319
1965	11.47622
1970	10.67167
1975	8.3925
1980	7.39173
1985	7.02856
1990	6.94416
1995	6.79709
2000	6.63136
2005	5.77826
2010	5.28412
2015	5.42061
2020	5.35516
2025	5.26655
2030	5.13283
2035	4.99405
2040	4.86843
2045	4.86951
2050	4.95323
2055	5.02029
2060	5.03155
2065	4.99486
2070	4.94919
2075	4.92471
2080	4.9311
2085	4.94151
2090	4.93792
2095	4.90624
2100	4.85878