Year	Percent
1950	8.49942
1955	8.56922
1960	12.66644
1965	17.00793
1970	17.35951
1975	12.58768
1980	8.81541
1985	7.8419
1990	6.34322
1995	8.69928
2000	10.20468
2005	8.46634
2010	5.54667
2015	3.47295
2020	3.86537
2025	5.10203
2030	5.80272
2035	5.63704
2040	5.16103
2045	4.67428
2050	4.53153
2055	4.74807
2060	5.08857
2065	5.29988
2070	5.29861
2075	5.17636
2080	5.07616
2085	5.07475
2090	5.14282
2095	5.19893
2100	5.18684